Alternatives to Zimbra
Compare Zimbra alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Zimbra in 2026. Compare features, ratings, user reviews, pricing, and more from Zimbra competitors and alternatives in order to make an informed decision for your business.
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1
Proton Mail
Proton AG
Proton Mail is the simplest way to protect your communications with built-in end-to-end encryption. Prevent data breaches, stay compliant with regulations like GDPR and HIPAA, and earn client trust. Protected by Swiss privacy laws and trusted by over 50,000 businesses, Proton Mail keeps your business data confidential and under your control. With Proton Mail and Calendar, your team can securely manage their inbox and schedule, while your organization maintains a professional presence with support for custom email domains and personalized branding. And with the Easy Switch tool, migrating from Google or Microsoft is seamless, no IT expertise required. -
2
Element
Element
Element is a secure communications platform built on Matrix: a decentralised and end-to-end encrypted protocol. Bring your teams together, boost productivity and workplace satisfaction, while retaining complete ownership of your data. Element is a leader in the Forrester Wave: Secure Communications report. Easily collaborate with your partners, suppliers or clients with video calls and instant messaging: like email for the 21st century. You can even connect your Slack, MS Teams, WhatsApp accounts. On the other hand Element can be closed for high security environments using secure border and cross domain gateways, and even air-gapped deployments. Being built on Matrix, there is no single point of failure for the network thanks to the decentralised network architecture, making it perfect for mission-critical environments. Please contact us to explore how your business can benefit from Element.Starting Price: $5 Per Monthly Active User -
3
Rocket.Chat
Rocket.Chat
Rocket.Chat is a fully customizable, open-source communications platform for organizations with high standards of data protection. It enables real-time conversations between colleagues, with other companies, or with your customers, regardless of how they want to connect with you. Compared to similar players in the industry, such as Slack and Microsoft Teams, Rocket.Chat offers an on-prem deployment that enables organizations to take full ownership of their data. Rocket. Chat's open-source nature makes it more flexible to meet specific company needs and more scalable to follow your organization's growth. It also holds the only true MIT open-source license. We have over 1000 developers across the world contributing to the open-source code. Every day, tens of millions of users in over 150 countries and in organizations such as Audi Business Innovation, Deutsche Bahn, The US Navy, and Credit Suisse trust Rocket.Chat to keep their communications completely private and secure.Starting Price: $3/user/month -
4
Brosix
Brosix
Brosix Instant Messenger (IM) supports businesses to streamline and secure their team communication through private team communication networks. Brosix provides businesses with all of the tools they need to increase team productivity in one user friendly and fully encrypted platform, including file transfer, screen sharing, group and private chat, virtual whiteboard and more. Brosix IM’s private networks help businesses to increase team collaboration and efficiency, reduce overhead, and guarantee data privacy. Team networks take just minutes to set up, so businesses can immediately begin reaping the benefits of their all-in-one, and fully administrable communication network.Starting Price: $4 per month -
5
Cloudiway
Cloudiway
Cloudiway’s migration and coexistence products help businesses perform cloud migrations of Mail, File, Site, Team, Group, Archive. Between collaboration tools like G Suite, Office 365, Microsoft Teams, Zimbra, IMAP, Dropbox, Lotus Note, Slack, and more, through a simple SaaS interface. As a result, migrations require no additional software installation and can be performed securely and quickly. Coexistence products allow end-users to collaborate as if they’re on the same system during mergers, acquisitions, or divestitures. “Microsoft Teams usage continues to grow worldwide, and migration between different teams or from different collaboration systems can be a requirement. With years of experience and a new interface, Cloudiway offers a solution to MSPs and IT Professionals.” -Mike Ammerlaan, Director of Microsoft 365 Ecosystem marketing at Microsoft Corp. -
6
Google Workspace
Google
G Suite just got better — introducing Google Workspace (formerly G Suite). Everything you need to get anything done, now in one place. An integrated workspace that’s simple to use, Google Workspace lets you spend less time managing your work and more time actually doing it. Address what’s important and let Google handle the rest with best-in-class AI and search technology that helps you work smarter. Work from anywhere, on any device – even offline – with tools to help you integrate, customize, and extend Google Workspace to meet your team’s unique needs. Similar to G Suite, all Google Workspace plans provide a custom email for your business and includes collaboration tools like Gmail, Calendar, Meet, Chat, Drive, Docs, Sheets, Slides, Forms, Sites, and more. We have a variety of plans that are designed to meet your unique business needs. Discover which plan best fits your business needs on our plans and pricing page.Starting Price: $6 per user per month -
7
Microsoft Teams
Microsoft
Solving today's complex business problems takes teams of engaged people working together. We’ve built an online guide to teach you and your team the secrets of successful teamwork. When you have a place to create and make decisions as a team, there’s no limit to what you can achieve. Teams brings everything together in a shared workspace where you can chat, meet, share files, and work with business apps. Get your team on the same page with group chat, online meetings, calling, and web conferencing. Collaborate on files with built-in Microsoft 365 (formerly Office 365) apps like Word, Excel, PowerPoint, and SharePoint. Add in your favorite Microsoft apps and third-party services to keep the business moving forward. Get end-to-end security, administrative control, and compliance—all powered by Microsoft 365. Teams is designed for groups of all kinds. Get started with the free, no-commitments version. You can also get Teams as part of the best-in-class suite of productivity tools.Starting Price: $12.50 per user per month -
8
Slack
Salesforce
Slack is a cloud-based project collaboration and team interaction software solution specially designed to seamlessly facilitate communication across organizations. Featuring powerful tools and services integrated into a single platform, Slack provides private channels to promote interaction within smaller teams, direct channels to help send messages directly to colleagues, and public channels that enables members across organizations to start conversations. Available on Mac, Windows, Android, and iOS apps, Slack offers a plethora of features that include chat, file sharing, collaborative workspace, real-time notifications, two-way audio and video, screen sharing, document imaging, activity tracking and logging, and more.Starting Price: $6.67 per user per month -
9
iRedMail
iRedMail
The right way to build your mail server with open source softwares. Works on CentOS Stream, Rocky, Alma, Debian, Ubuntu, FreeBSD, OpenBSD. With iRedMail, you can deploy an OPEN SOURCE, FULLY FLEDGED, FULL-FEATURED mail server in several minutes, for free. We did the heavy lifting of putting all the open source components together and applying best practices. Our product does all the major tasks for you. Furthermore we offer professional support to back you up in case you have some problems. You have all personal data on your own hard disk, you can control the email security, inspect transaction log. No other organization can see the content of all messages. All components used in iRedMail are open source softwares, and you get the bug fixes and updates from the Linux/BSD venders you trust. iRedMail is the right way to build your mail server with open source softwares.Starting Price: Free -
10
Atmail
Atmail
Generate revenue by improving your branded email hosting experience. Perfect for telcos and service providers that provide consumer and SME email platforms. We invite you to deal directly with our decision-makers, innovators and technical experts, so that we can work together to nurture a long-term and prosperous relationship. We are an agile, receptive, and transparent partner. We genuinely welcome your ideas and encourage you to be part of our continual improvement process. Save time and scale faster with secure and reliable cloud email hosting. A proven multi-tenant email solution for telcos and service providers. Many telcos run their customer email services on-premises. Moving these to the cloud can help grow your platform faster, more securely, and more cost-effectively. Protect your emails with our market-leading email protection services. Trust in our proven 99.99% uptime and stability across multiple regions. -
11
Afterlogic Aurora
AfterLogic
Groupware system for businesses and providers, backed with mobile apps. Your private cloud combining groupware, file storage and email in a single, unified environment. Clean and modern interface. Can work with your existing mail server or use its own for the complete solution. iOS/Android apps for Email and Files let your users just type their email/password and never deal with mail server settings or blocked IMAP/SMTP ports. Can be integrated with LDAP authentication or LDAP address book, along with OAuth 2.0 authentication and resources, like Google Drive or Dropbox.Starting Price: $99.00/one-time -
12
hMailServer
hMailServer
hMailServer is a free, open source, e-mail server for Microsoft Windows. It's used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the world. It supports the common e-mail protocols (IMAP, SMTP and POP3) and can easily be integrated with many existing web mail systems. It has flexible score-based spam protection and can attach to your virus scanner to scan all incoming and outgoing email.Starting Price: Free -
13
mailcow
mailcow
mailcow: dockerized is an open source groupware/email suite based on Docker. mailcow relies on many well known and long used components, which in combination result in an all around carefree email server. Each container represents a single application, connected in a bridged network.Starting Price: Free -
14
Axigen
Axigen Messaging
Offer your customers secure, business-level email hosting with various value added services. An excellent solution for SPs, suitable for thousands to millions of users. Acquire new customers by offering a premium email server solution with a high degree of flexibility, allowing you to automate it within your existing infrastructure. Manage your email, organize and share calendars, sync your mobile devices, all based on a secure and powerful mail server. The perfect answer for businesses of all sizes. Axigen is quite knowledgeable, out of the many hats it wears, take a peek inside and choose what fits you. Manage your email and get stuff done easily with calendars, tasks or notes. Enjoy desktop usability in your browser via keyboard navigation and shortcuts, drag-and-drop, "live" email list view, frequent folders, email filters, out-of-office messages, individual blacklist / whitelist.Starting Price: $266 per year -
15
Dovecot
Dovecot
Dovecot is an excellent choice for both small and large installations. Dovecot is among the best performing IMAP servers while still supporting the standard mbox and Maildir formats. The mailboxes are transparently indexed, which gives Dovecot its good performance while still providing full compatibility with existing mailbox handling tools. Dovecot is standards compliant. Dovecot passes all IMAP server standard compliancy tests while most other servers fail many of them. Dovecot’s indexes are self-optimizing. They contain exactly what the user’s client commonly needs, no more and no less. Dovecot is self-healing. It tries to fix most of the problems it notices by itself, such as broken index files. The problems are however logged so the administrator can later try to figure out what caused them. Dovecot tries to be admin-friendly. Common error messages are made as easily understandable as possible.Starting Price: Free -
16
IceWarp
IceWarp
The only office rule is, there is no office. Business email, TeamChat for project teamwork, real-time office document collaboration and online meetings. All in our secure cloud and for half the usual cost. Chat in teams organized around projects, upload files, mention coworkers, comment on posted emails, pin important posts. Integration with email enables sharing received messages directly to TeamChat room for colleagues‘ attention. Skyrocket your office work effectivity with Desktop Client and Desktop Office documents on Windows as well as Linux devices. Get the complete Suite, or choose only the app you need.Starting Price: $312.00/year/user -
17
MDaemon Email Server
MDaemon Technologies
The MDaemon Email Server was one of the first Microsoft Exchange alternatives offered to businesses around the world. It has been developed with the ongoing input from IT professionals seeking an easy-to-use, reliable, and secure mail server that does not require expensive administration or impose high per-user costs. It simplifies messaging and collaboration with a focus on security and privacy, an intuitive, user-friendly web mail design and by offering administrators Mobile Device Management, Business Instant Messaging, Document Sharing, and other enterprise-class features that can be managed with minimal support. MDaemon Email Server supports IMAP, SMTP, and POP3 protocols, and features include: integrated webmail with IM and document sharing, Outlook support, compromised password alerts, color-coded log files for quick and easy troubleshooting, customizable email policy setting to fit your unique network environment, Mobile Device Management, Account Hijack Detection, and more.Starting Price: $360 per year -
18
Modoboa
Modoboa
Regain your independence and protect your privacy by installing your own email server. It takes less than 10 minutes! Create your mail server for free in less than 10 minutes with Modoboa When it comes to create a mailbox, you generally have several solutions: - Use the services offered by Internet providers (Orange, Vodafone...) of infrastructure providers (OVH, Gandi...) with a monthly or annual subscription. However, customization and configuration possibilities, domains and mailboxes number are limited. - Use the services of free email providers (Gmail, Live, Yahoo...) which are limited and your data is used for commercial purposes. - Install your own email server, which requires important technical knowledge to setup and configure the system. Modoboa is an alternative to those 3 options. It frees you from dependence on email providers and makes accessible to all the creation his own secure email server. The whole thing, in less than 10 minutes and freely.Starting Price: Free -
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Kopano
Kopano
We provide you with your digitally sovereign solution to keep track of your e-mails and calendars, to organize yourself with tasks or to stay in contact with team colleagues via video meeting. Kopano Groupware is an e-mail and calendaring solution, which can be operated digitally sovereign. Its functionality is comparable to that of Microsoft Outlook and Exchange. Kopano Groupware installations can be operated with more than 100,000 users. Kopano Groupware is an e-mail and calendar server that provides users with their daily communication and organizational data on all devices and connects teams. Data can be jointly edited in public folders or shared with others from your own inbox.Starting Price: $17 per year -
20
Kerio Connect
Aurea
Secure, enterprise-style email, calendar & collaboration without the high cost. Kerio Connect delivers all the features and functionality for collaboration and messaging solution without the complexity and high price tag of other systems. Email is integrated with shared calendars and scheduling, contacts management, tasks, notes, shared and public folders, and instant messaging. Synchronize messages by direct push to your choice of mobile device via Microsoft ActiveSync. Instant Messaging is XMPP-compatible and can be used from various 3rd party chat/IM applications on desktop and mobile phones. You can install Kerio Connect in 10 minutes and users can be up and running in just 10 minutes more. Kerio Connect can be deployed on-premises or in partner-hosted cloud environments. Deploy for users on Mac, Windows, or Linux; plus full support for Outlook (Windows and Mac) and many other IMAP or POP compliant email clients.Starting Price: $36.50 -
21
Mail-in-a-Box
Mail-in-a-Box
Mail-in-a-Box lets you become your own mail service provider in a few easy steps. It’s sort of like making your own gmail, but one you control from top to bottom. Technically, Mail-in-a-Box turns a fresh cloud computer into a working mail server. But you don’t need to be a technology expert to set it up. Each Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software. It also includes contacts and calendar synchronization. The box also includes other standard mail functionality like spam protection (spam filtering and greylisting), mail filter rules, email client autoconfiguration, and automated backups to Amazon S3 and other services. The box also includes automatic DNS configuration when you let it become your nameserver so that it can set important DNS records for mail deliverability and security including SPF, DKIM, DMARC, and MTA-STS. When enabled, DNSSEC (with DANE TLSA) provides a higher level of protection.Starting Price: Free -
22
MailEnable
MailEnable
MailEnable provides an end to end solution for providing secure email and collaboration services. A recent independent survey reports MailEnable as the most popular Windows Mail Server Platform in the world. Whether you are a hosting company providing email services to thousands of end users or a small business with a single domain, MailEnable provides a solution that will impress your mail users. MailEnable provides Windows Mail Server software with features comparable to Microsoft Exchange. It provides powerful messaging services like Exchange ActiveSync, IMAP, SMTP, POP3 and collaboration tools such as calendaring (CalDAV), contacts (CardDAV), tasks and notes.Starting Price: $349 -
23
Mailplane
Mailplane
Manage all your Gmail, Calendar and Contacts accounts in Mailplane instead of cluttering up your browser window. All-in-one app with Apple-like keyboard shortcuts. No separate set-up required. Mailplane's notifier lets you know how many unread messages are in your inboxes, right from your Mac's menu bar. It also notifies you when new emails arrive. You can react directly by archiving a message or writing a quick reply. Navigate Mailplane at the speed of light. No matter if you want to jump to a label, tab, account, or bookmark. Search for messages simultaneously across all your Gmail accounts. Get your point across with fewer words using annotations and shapes. Mailplane integrates with other macOS apps in various ways. Third-party extensions enhance Mailplane. Fully localized in English, Japanese, German, French, Spanish, and Italian. Thanks to our loyal customer base, Mailplane has been around for ages. We love to continuously improve it for you!Starting Price: $29.95 one-time payment -
24
Roundcube
Roundcube
Browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an email client, including MIME support, address book, folder manipulation, message searching and spell checking. Drag-&-drop message management. Full featured address book with groups and LDAP connectors. Canned response templates. Responsive skin (multi-device support).There are thousands of services that make use of Roundcube to provide webmail to millions of users. We love to see our application in so many hands and believe it is essential for society at large to have Open Source software available for a crucial task such as communication. Below is a list of services that not only use, but actively contribute to Roundcube and where usage of those services helps to improve and further develop Roundcube webmail. These are the services that make it possible for us to continue improving our software and to make it freely available for everybody. -
25
RainLoop
RainLoop
Modest system requirements, decent performance, simple installation and upgrade, no database required - all these make RainLoop Webmail a perfect choice for your email solution. Modern user interface. Complete support of IMAP and SMTP protocols including SSL and STARTTLS. Sieve scripts (Filters and vacation message). Minimalistic resources requirements. Direct access to mail server is used (mails are not stored locally on web server). Allows for adding multiple accounts to primary one, simultaneous access to different accounts in different browser tabs is supported. Additional identities. Administrative panel for configuring main options. Really simple installation and update. Integration with Facebook, Google, Twitter and Dropbox. Managing folders list. Simple look'n'feel customization. Configurable multi-level caching system. Extending functionality with plugins installed through admin panel. Perfect rendering of complex HTML mails. Drag'n'drop for mails and attachments.Starting Price: $95 per year -
26
SOGo
SOGo
SOGo is a fully supported and trusted groupware server with a focus on scalability and open standards. SOGo is released under the GNU GPL/LGPL v2 and above. SOGo provides a rich AJAX-based Web interface and supports multiple native clients through the use of standard protocols such as CalDAV, CardDAV and GroupDAV, as well as Microsoft ActiveSync. SOGo is the missing component of your infrastructure; it sits in the middle of your servers to offer your users a uniform and complete interface to access their information. It has been deployed in production environments where thousands of users are involved. -
27
SmarterMail
SmarterTools
SmarterMail is the ideal Microsoft Exchange alternative. It’s the only business email server on the market that offers native support for Exchange protocols: MAPI, EWS, and EAS, without requiring any additional software or plug-ins for Microsoft Outlook or other desktop or mobile clients. It delivers all the features of Exchange at a fraction of the cost. SmarterMail also includes audio/video group chat and Online Meetings for team collaboration at no extra charge. Its newest feature, the SmarterMail Marketplace, enables seamless integration with platforms like OnlyOffice, Collabora, and AI tools such as OpenAI’s ChatGPT. Available for both Windows and Linux, SmarterMail has lower hardware requirements, superior stability, and reduced maintenance costs. It’s the perfect solution for businesses of any size or industry seeking Exchange-level functionality, without the high costs.Starting Price: $500.00/one-time -
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SoftSpire Zimbra Converter
SoftSpire
Zimbra Converter is a comprehensive tool, designed to convert Zimbra Mailboxes to multiple applications, with full precision. A complete migration utility, Zimbra Mail Converter moves all the emails, contacts, notes, tasks, calendars of multiple user profiles into format, to be further imported into various applications. The software creates individual file for every mailbox, allowing easy management of all user accounts. Tested with around 20000+ files, the software offers smooth Zimbra mailbox conversion, thereby eliminating any kind of file size limitation and promoting large scale migration. A Windows based tool, Zimbra Converter works on Windows 10 and all its earlier editions. While carrying out the Zimbra Mailbox conversion, software retains the same Zimbra folder structure thoroughly in MS Outlook, without any change or damage.Starting Price: $299 one-time payment -
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The Very Good Email Company
The Very Good Email Company
Your email in safe hands! The Very Good Email Company have built a range of services around its core email filtering services: filtering, hosting, groupware tools, archiving and fax to email solutions are available. Gateway: weapons-grade anti-virus and anti-spam filtering before it hits your, or your customers’ network! MailCore Pro: email hosting and office collaboration service: providing email, shared calendars, contacts, files and notes. Includes anti-virus and anti-spam filtering as standard. Zimbra: all the benefits of the Zimbra enterprise-class email, calendar and collaboration solution, with our spam and virus filtering as standard. Now with a huge 50GB of storage per mailbox! Messagebunker: a simple, secure, easy to set up and use in-the-cloud email archiving and discovery platform that won’t break the bank. FREE Trial! -
30
Diadem
Diadem
Diadem Technologies is amongst India’s leading cloud service providers that provides cloud, dedicated and hybrid hosting solutions to clients across the globe. Host your email ids on our Zimbra Cloud or go Hybrid with O365 or G Suite with Zimbra to get a cost-effective solution without compromising on performance and features. Diadem Technologies is an ISO 27001 certified cloud service provider that hosts and manages its own network, hardware and scalable cloud platform at India’s only Uptime certified TIER IV IDC. Our hosting solutions include DR backups, managed support, and security by our expert admin team. We understand the urgency of your critical business and our experts are available round the clock to provide support when required. We manage your hosted assets with our automation platform and help is always a call or email away. TIER IV Datacenter, ISP multi-homing and redundant network to avoid any downtime.Starting Price: $2 per month -
31
Harmonizely
Harmonizely
Save time and avoid unnecessary emails. Boost engagement and conversion rates. Allow the invitees to choose from available meeting times. No action is needed from your side. Just send an invitation link. Connect Google, Outlook/Office 365, iCloud, Zimbra, Zoho, and other CalDAV solutions. Choose an all-in meeting scheduler to rule them all. Access all meetings and calendars from one scheduling app. Save time and avoid confusion. Integrate Harmonized with other popular platforms. The list of integrations includes Slack, MailChimp, Google Sheets, Pipedrive, WordPress, and many more! Our Zoom, Microsoft Teams, Whereby, Kopano Meet or Google Meet integration generates a unique video conference link for every meeting. Most meeting scheduling apps work with the most popular calendars only, such as Google Calendar, iCloud, or Office 365. Harmonizely, on the other hand, is a comprehensive scheduling tool. It supports a wider range of calendars, including Zimbra, Zoho, Fastmail, etc.Starting Price: $7 per month -
32
Vaultastic
Mithi Software Technologies
Vaultastic can ingest your business data stored from a wide range of active and legacy data sources into a central, unified cloud repository. Vaultastic’s cross-platform architecture integrates easily with various data sources such as Microsoft 365, Google Workspace, Google Drive, Microsoft Exchange, Zimbra, Salesforce, SendGrid, and many more. On-demand SaaS tools for fast e-discovery, governance, and flexible data extraction increase the visibility and availability of business-critical data while reducing the risk, cost, & complexity of managing and protecting it. Vaultastic supports data protection, backup as a service (BaaS), compliance, e-discovery, storage management, legacy data preservation, supervision, and many more use cases, backed by complete data lifecycle services at highly optimized costs.Starting Price: Pay Per Use -
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ClrStream
Mithi Software Technologies
29% of businesses that face a data breach end up losing revenue. And email is the #1 target of attack. Secure your email systems with ClrStream. A security and continuity solution for MS Exchange, Office 365, MDaemon, Postfix, Postmaster, Zimbra & other mail solutions. 88% of businesses experience data loss and email is the main culprit. An email scrubbing solution with guaranteed protection from Malware, Ransomware, Virus and Spam. Low latencies for mail delivery and a low rate of false positives. A peripheral, out-of-environment solution to mitigate DDOS attacks. A solution that can provide email Continuity when the primary mail server is unavailable or down. A solution offering with built-in redundancies and scale eliminating the need for a mail parking service. A cloud-based SaaS solution that helps de-congest bandwidth and eliminates management headaches. -
34
Aryson Gmail Backup Tool
Aryson Technologies
Aryson Gmail Backup Tool capable to the backup email of personal and business Gmail Account. It saves Gmail email backup as multiple file formats such as PST, EML, MBOX, PDF, MSG, EMLX, HTML, and TXT. The Gmail Backup Software switch email from one Gmail account to another Gmail, Yahoo, Hotmail, Thunderbird, Zimbra, and IMAP account with all email items and their properties. The Gmail Backup software also download all emails from the Gmail account to personal local system in various file formats. This software works on all versions of Windows OS including Windows 10 and lower version. It allows to saves email from Gmail Account as PST file which can be easily accessed with all version of MS Outlook application. Aryson Gmail Backup Software saves email backup of Gmail as an EML file which can be easily imported into Windows Live Mail, Thunderbird, Windows Mail, and Apple Mail. Demo version of Aryson Gmail Email Backup tool capable of freely backup up to 50 email items from Gmail Account -
35
Dianahost
Dianahost
DianaHost provides a full suite of web infrastructure services built on enterprise-grade hardware and a global network to help businesses grow online. Its offerings include instant-activation domain registration with DNS management, URL and email forwarding; SSD RAID-10–backed web hosting powered by LiteSpeed for up to 10× faster performance; BDIX-peered and USA-optimized shared hosting; cloud, premium and corporate hosting; specialized Windows ASP.NET and PNR (Python, Node.js, Ruby) environments; managed and unmanaged VPS options (Webuzo/cPanel BDIX, KVM, AWS, DigitalOcean, n8n) with RDP support; and professional email solutions (Zimbra, OX, G Suite). Complementary services include SSL certificates, a drag-and-drop website builder, bulk SMS and WhatsApp messaging, SEO and professional software integrations. All plans feature DDoS protection up to 30 Gbps, a 99.9 % uptime guarantee, and 24/7/365 expert support accessible via live chat, ticketing, or phone.Starting Price: $0.81 per month -
36
Spike
Spike
Spike brings your entire workspace into your Inbox: email, chat, calendar, calls, team collaboration, tasks — to one powerful Inbox. Everything you need to get your work done is in a single feed, so you can finally give the app-switching a rest. Spike’s conversational email fuses traditional email with instant messaging — eliminating cluttered email threads. With real-time conversations and live collaboration, have better interactions and a more human communication experience. Spike is available on iOS, Android, Mac, Windows & Web.Starting Price: Free -
37
Wire
Wire
Wire protects critical communications for the world’s most security-demanding organizations. Wire's highest security standards enable users to communicate securely, thanks to the most advanced encryption and its Zero-Trust architecture, while facilitating user administrators to manage and control their organization's information, guaranteeing the sovereignty of their data. Created by the founders of Skype, Wire provides end-to-end encryption for messages, audio and video conferencing, file exchange, external collaboration, and beyond. Used by most of the world's G7 governments and other security-critical organizations globally, Wire is pushing the limits of secure communication, pioneering work for standardized encryption with Messaging Layer Security. To learn more, visit wire.comStarting Price: 7.45€ -
38
Lark
ByteDance
The next-gen collaboration suite. All your chats, meetings, calendars, docs, and emails in one place. These organisations have made Lark their all-in-one solution for collaboration. Lark is a comprehensive productivity superapp designed to streamline collaboration. It combines chat, meetings, document editing,project management, and automation tools in one intuitive platform, simplifying your workflow and enhancing team communication. It suits teams of all sizes, from small groups to large multinational companies. By utilizing Lark Base, teams have the ability to construct a CRM solution that aligns with their present requirements and is capable of expanding along with the business. Additionally, Lark is well-equipped to serve as a project management tool, providing project managers with robust features for planning, tracking, and executing projects effectively.Starting Price: $12/user/month -
39
Mattermost
Mattermost
Mattermost is a flexible, open source messaging platform that enables secure team collaboration. Build intuitive workflows and collaborate across large teams without worrying about security or data privacy. Get up and running quickly with hundreds of existing integrations, or build out custom workflows that scale to tens of thousands of concurrent users. Many of the world’s leading privacy-conscious enterprises work better with Mattermost by connecting people, tools, and automation to increase collaboration. DevOps teams use Mattermost to power collaboration at every stage of the DevOps lifecycle. Mattermost unifies people, tools, data, and automations to help your team increase innovation and agility. Mattermost is an open source Slack alternative. It's written in Golang and React and runs as a single Linux binary with MySQL or PostgreSQL. Use the features you like (file sharing, real-time group chat and webhooks—to name a few) and access the source code.Starting Price: $3.25 per user per month -
40
WeChat
Tencent
Whether you want to send messages or share photos and videos, you can chat freely through WeChat. Wherever you go, you can immediately get in touch with the people you care about using WeChat. Search and add friends directly via WeChat ID or mobile number. Start chatting once your friend request has been accepted. On Moments, you can share your life's favorite experiences using photos or videos with your friends, and also see your friends' Moments at any time. Let's share on Moments! Get face-to-face with your friends and family instantly via WeChat. WeChat allows you make free video and voice calls no matter where you are with one friend or a group of friends. If you're unable to express your feelings in words, then send a sticker to make your chats more fun. Designed by talented artists around the globe, WeChat's Sticker Gallery offers users free downloads and sending of countless fun stickers. Come and select your favorite stickers to chat with your friends!Starting Price: Free -
41
Zoom Team Chat
Zoom Communications
Connect your teams and streamline communications. Included with your Zoom license is Zoom Team Chat. Helping your teams stay connected. Streamline your teams with chat and video meetings. Make collaboration easier between teams and external participants with enterprise chat and instant video meetings. Power modern and efficient team communication. Create a virtual workspace where all the right people for every project are ready to collaborate. Organize your communications chaos. Save time by quickly finding messages, content, and links related to your conversations and projects. Start a meeting with any 1:1 or group channel. Zoom meetings scale up to 1,000 people with clear video, audio and screen sharing. Communicate in public or private channels organized by projects, teams, or topics. Share files, emojis, screenshots, and more. Quickly find contacts, messages, and files, keeping knowledge and information at your fingertips. Calendar integrations sync status and presence. -
42
Messagenius
Messagenius
MESSAGENIUS - SECURE ENTERPRISE MESSAGING Messagenius is the enterprise messaging for secure, smart and integrated communications among colleagues: - Runs on your own private servers/clouds; - Enhances productivity with dedicated features; - Integrates into any software in use; - Gets 100% customisable and comes in white-label by default. COMPETITIVE ADVANTAGES Messagenius has 3 main competitive advantages in comparison with the mainstream messaging apps (WhatsApp, Slack, Skype, etc.): 1. SECURITY, DATA OWNERSHIP & COMPLIANCE - It runs on the customer’s private servers (on-premises/private-cloud). 2. PRODUCTIVITY - UX and UI are 100% customizable, up to white label. 3. INTEGRATION - It integrates into and with any software in use. TECHNOLOGY Messagenius is available for Android, iOS, web & desktop as: stand-alone messaging app, branded and customised in white label; add-on messaging feature, integrated into other software via SDK.Starting Price: $8 per user per month -
43
AWS Wickr
Amazon
AWS Wickr is a secure, end-to-end encrypted messaging platform designed for enterprises and government agencies to facilitate confidential communication. It supports text, voice, video, file sharing, and screen sharing with robust data protection and compliance capabilities. AWS Wickr ensures messages are encrypted at rest and in transit, with content expiration and ephemeral messaging features to reduce data retention risks. The platform allows for seamless collaboration while maintaining strict security, privacy, and regulatory standards. It is widely used in industries requiring high levels of confidentiality, such as defense, healthcare, and financial services.Starting Price: $5/user/month -
44
Fastmail
Fastmail
Email you can feel good about. features you’ll love. You get 100% of our efforts and expert support when you need it. Email holds the details of your life. Here, your story is protected, not monetized. Thoughtful and speedy email, calendars, and contacts; all ad-free. Built with you in mind, you’ll love our intelligent features. Internet companies use your data as a way to get rich. But it doesn’t have to be this way. Take back your privacy and get a better email experience. With your email on your side, you spend more time doing what you love. Use Fastmail in your web browser, on mobile devices, and on desktop apps (Outlook, Thunderbird, Mac Mail). Breeze through your day with email, calendars, and contacts all in one app. Seamlessly import your data. Keep your life organized with a full-featured inbox. Bring all your calendars together. Share with your favorite people. Use your custom domain, and own your email address forever.Starting Price: $3 per user per month -
45
Rock
Rock
Messaging + tasks combined at last. Rock allows you to work together with anyone with messages, tasks, notes, file storage, and meetings in one place. All-in-one communication built for remote and hybrid teams. Rock allows you to collaborate with anyone, anywhere. Maximize your productivity while streamlining team communication and collaboration with: - Full-fledged messaging app with unlimited messages. - Unlimited tasks, project boards, to-do lists, filters, deadlines, and more! - Kanban boards, assignees, checklists sprints, task deadlines, and more all in the Tasks mini-app. - Note-taking functionality to document important information with your team. - Seamless integrations with Google Drive, Zoom, GitHub, Zapier, Figma, Notion, Google Docs, Google Meet, Dropbox, and more! - Import all your messages and tasks from Slack, WhatsApp, Trello, Asana, ClickUp, Jira, and more. Purpose-built for remote teams and hybrid teams. Get work done without switching platforms.Starting Price: $5.99 -
46
OpenText GroupWise
OpenText
OpenText GroupWise is a secure, enterprise-grade messaging and collaboration platform that combines email, calendaring, contacts, and scheduling into a single, flexible system. It is built for organizations that require strong security, compliance, and reliability across highly regulated industries such as government, education, utilities, and healthcare. The platform enables teams to customize the user interface, integrate with systems like Microsoft Exchange and Active Directory, and centrally manage contacts, address books, and shared calendars. GroupWise includes intelligent scheduling tools, travel-time adjustments, and collaboration features that help streamline workflows and improve daily productivity. Its security measures—such as multifactor authentication, encryption, and gateway protection—ensure that sensitive communications stay protected. -
47
Amazon WorkMail
Amazon
Amazon WorkMail is a secure, managed business email and calendar service with support for existing desktop and mobile email client applications. Amazon WorkMail gives users the ability to seamlessly access their email, contacts, and calendars using the client application of their choice, including Microsoft Outlook, native iOS and Android email applications, any client application supporting the IMAP protocol, or directly through a web browser. You can integrate Amazon WorkMail with your existing corporate directory, use email journaling to meet compliance requirements, and control both the keys that encrypt your data and the location in which your data is stored. You can also set up interoperability with Microsoft Exchange Server, and programmatically manage users, groups, and resources using the Amazon WorkMail SDK. Amazon WorkMail features simple, low, monthly per-user pricing and costs $4 per user per month which includes 50GB of storage per user.Starting Price: $4 per user month -
48
Jamespot
Jamespot
Jamespot is the number one french cloud software for communication and collaboration needs of businesses of all sizes wether at the organizational level or at the teams level. 1. An interface to your own image 🎨 Graphic charter, name, logo, menu, wording... Jamespot is 100% configurable according to your needs. 2. Countless possibilities 🚀 Thanks to our 100 native and partners apps, Jamespot covers 100% of your collaborative needs. Our open API allows you to connect Jamespot to O365, GSuite and countless other solutions. 3. Accessible from your phone 📱 Thanks to the Jamespot mobile application, your platform follows you wherever you are. 4. A 100% secure french solution 🔐 The datas are hosted in France and we complie with all the GDPR requirements. We even have certifications that allow us to host health datas. 5. Ultra rapid deployment 🚄 You are in a hurry? From a few days or a few weeks, our team adapts to your rythm accompanies you throughout the deployment.Starting Price: 6$/user/month -
49
BBM Enterprise
BlackBerry
Enterprise-grade Messaging and Conferencing Solution with End-to-end Security and Privacy. BBM® Enterprise offers secure text, voice, video, group chat and conferencing on any device, including smartphones and desktops. It’s the ideal communications solution for businesses and working professionals, with its end-to-end encryption on multiple endpoints, robust privacy policies and enterprise-grade features. -
50
Hexamail Flow
Hexamail
Hexamail Flow is a full email client, with calendaring, tasks and contacts. It operates with Office 365, Gmail, including modern authentication methods (OAUTH) works with Exchange on premises and all IMAP and POP3 servers. The GDPR data protection module offers email and office document redaction features including full PST file import, eml and msg file import, office document import and printing output or PDF generation of redacted content.Starting Price: Free
