Best Free Authentication Software
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Compare the Top Free Authentication Software as of January 2026
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What is Free Authentication Software?
Authentication software verifies the identity of users or devices before granting access to systems, applications, or data, ensuring security and preventing unauthorized access. It supports various methods such as passwords, biometrics, multi-factor authentication (MFA), token-based authentication, and single sign-on (SSO) to provide flexible and robust identity verification. The software integrates with identity management systems and security frameworks to enforce access policies and monitor authentication events. By enhancing security and user experience, authentication software is critical for protecting sensitive information in industries like finance, healthcare, and government. It helps organizations comply with regulatory requirements and reduce the risk of breaches. Compare and read user reviews of the best Free Authentication software currently available using the table below. This list is updated regularly.
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1
Auth0
Okta
Auth0 takes a modern approach to Identity, providing secure access to any application, for any user. Safeguarding billions of login transactions each month, Auth0 delivers convenience, privacy, and security so customers can focus on innovation. Auth0 is part of Okta, The World’s Identity Company™. Auth0 lets you quickly integrate authentication and authorization for web, mobile, and legacy applications, with new Fine Grained Authorization (FGA) that goes beyond role-based access control. Authenticate users across all applications with a customized, secure, and standards-based single login. Universal Login connects users to a central authorization server. Credentials aren’t transferred across sources, which boosts security and protects against phishing and credential stuffing attacks. OAuth 2.0 recommends that only external user agents (like the browser) be used by native applications for authentication flows. Auth0’s Universal Login achieves this while enabling SSO.Starting Price: Free plan -
2
FusionAuth
FusionAuth
FusionAuth provides a comprehensive authentication platform designed for flexibility, security, and developer ease. It supports a wide range of authentication methods including username/password, passwordless, multi-factor authentication (MFA), and social logins. FusionAuth is built API-first, allowing seamless integration into any tech stack or architecture. It supports industry protocols like OAuth2, OIDC, and SAML for secure and standards-compliant authentication. Whether deployed on-premises, in the cloud, or in hybrid environments, FusionAuth gives you full control over the user login experience while helping you meet compliance requirements such as GDPR, HIPAA, and COPPA.Starting Price: $0 -
3
Auth Armor
Auth Armor
Harness the power of biometrics on smartphones to make authentication easy for any application or website, creating a new approach to logging and authenticating online. Passwordless and 2-factor authentication that lets you authenticate your users with the smartphones in their pockets. Auth Armor puts secure authentication in the hands of every user — no weak passwords or cumbersome codes. We have built powerful APIs, SDKs, libraries, and dashboards to allow you to build what you want to build, how you want to build it. Use our tools to build authentication into any app, using any flow you would like. We offer Consumer facing and workforce protection, giving you the power and flexibility to secure anything, the way you need it. Auth Armor is the fastest and easiest mobile authenticator available. We support instant push messaging directly to user's devices enabling the fastest login and authentication experience.Starting Price: FREE for 10,000 active users! -
4
GateKeeper Enterprise
Untethered Labs, Inc.
Passwordless, proximity login to PCs, Macs, websites, and desktop applications. Hands-free, wireless 2FA and password manager through active proximity-detection. IT admins can dynamically allow users to log in to their computers and websites with a physical key either automatically, by touch, by pressing Enter, or with a PIN. Seamlessly login, switch users, switch computers, and logout without passwords, touch, or trouble - just a key. Once a user walks away, the computer will lock, blocking access to the computer and web passwords. With continuous authentication, users are always being checked to ensure that they require access. No more typing passwords. Admins and compliance can now automate password security from a central admin console: enforce stronger passwords, enforce 2FA, and give employees the power of password-free login without interrupting workflow. Reduce helpdesk tickets related to forgotten passwords/password resets. Login and auto-lock with proximity.Starting Price: $3/user/month -
5
Authsmith
Authsmith
Authsmith is a cloud-based authentication platform that simplifies securing and managing user access for applications. The system supports multiple authentication methods including email/password, social logins, and single sign-on, creating a streamlined login experience. The platform includes analytics capabilities that provide insights into user activity and authentication metrics, allowing administrators to monitor system health and identify potential security concerns. Authsmith features multi-factor authentication and automated security alerts that help prevent unauthorized access and maintain compliance with industry standards. User management tools within Authsmith enable control over roles and permissions from a centralized dashboard. The platform offers API access for developers to integrate authentication features into their applications. Authsmith delivers a comprehensive solution for managing user access while maintaining strong security measures.Starting Price: $30 -
6
Cisco Duo
Cisco
Cisco Duo is a cloud-based identity security solution that protects organizations from identity-based threats and boosts workforce productivity. Trusted by over 40,000 organizations worldwide, Duo delivers an exceptional access management experience across all users, devices, and applications, making access to resources secure, seamless, and easy. Duo with Cisco Identity Intelligence provides deep visibility across your identity ecosystem, adding a powerful security layer to any identity infrastructure. Offer users a world-class access experience through Duo Passport to eliminate MFA friction and fatigue without sacrificing security. To stop threats, Duo verifies user identities with strong authenticators including Duo passwordless, Verified Duo Push with number matching, and phishing-resistant factors like biometrics and FIDO2 security keys. Paired with deep insights into users’ devices, Duo gives you the control to adaptively limit access based on device health or user risk.Starting Price: $3 per user per month -
7
LastPass
LastPass
LastPass is a cloud-based password manager available on any system or device, ensuring credentials are protected, private, and always within reach. Simple to set up and effortless to use, LastPass delivers the world's most convenient password management experience for consumers and businesses of all sizes and technical requirements. Say goodbye to password fatigue by generating, sharing, accessing, and managing credentials at the click of a button, while preventing bad actors from accessing precious data and account logins. Businesses also utilize LastPass to consolidate their tech stacks or to fill access management gaps with native integrations for MS Entra, Okta, and other IdPs and IAMs. With over 100 customizable policies, flexible privileges, detailed reporting, MFA and passwordless authentication options, LastPass makes it easy for organizations with numerous logins and increasing security risks to standardize password management company wide.Starting Price: $4 per user per month -
8
Rublon
Rublon
Rublon enables your workforce to securely access your organization's networks, servers and applications. Protect your data via easy-to-use multi-factor authentication and comply with data protection regulations like GDPR. Deploy Rublon organization-wide, enabling MFA for all your cloud apps, VPNs, servers, workstations, internal as well as on-premise apps.Starting Price: $1/month/user -
9
Quicklaunch
Quicklaunch
QuickLaunch is the #1 leader in Identity and Access Management (IAM) for Higher Education. More than 500 organizations trust QuickLaunch’s platform to manage over 2,000,000 identities and integrate over 3,000 applications worldwide. CIOs, CTOs, and CISOs use QuickLaunch IAM technologies to engage with students, faculty, and staff and protect them throughout their journey. QuickLaunch’s technology is vital in protecting the user experience, driving both operational efficiencies and higher productivity for colleges, universities, and institutions. Improves cyber security posture by protecting user accounts from being hacked and thwarting ransomware and phishing cyber attacks. Automatically provisions students from the Student Information System and employees from the Human Resources system so they can quickly get access to the apps they need when they matriculate and join.Starting Price: $0.73 per month -
10
OneLogin
OneLogin
Secure critical company information and empower employees with OneLogin, a trusted identity and access management (IAM) solution for the modern enterprise. Designed to strengthen enterprise security while simplifying business logins, OneLogin is an excellent solution for companies looking to enforce security policies with ease. OneLogin includes top-rated features such as single sign-on (SS), unified directory, user provisioning, adaptive authentication, mobile identitiy, compliance reporting, and more. -
11
OpenIAM
OpenIAM
Identity Governance and Web Access Management. As new employees join your organization, you face the conundrum of ensuring that they are given rights to all the systems and resources they need to do their work on the day they join the firm. Similarly, when a person changes positions within the firm, access that is no longer relevant must be revoked and access that is needed for their new position must be granted. For the situation of users leaving the firm or being terminated, it is even more imperative that permissions be addressed. Access to sensitive applications and data must be disabled/removed in a timely manner with traceability to avoid the consequences of a disgruntled user. -
12
LoginTC
Cyphercor
Cyphercor is a two factor authentication provider that offers a best-in-class solution that's effortless, intuitive, and cost-effective called "LoginTC". LoginTC adds an additional layer of security to your systems and applications including VPNs, Firewalls, remote desktop, active directory, and more with it's innovative 2fa software. LoginTC offers a wide range of two factor options for end-users to authenticate, including SMS, email, push notifications, hardware tokens, U2F, OTP, bypass codes, and more. LoginTC was built with the principle that administrators are users too, and offers a solution that's not just easy for end users day-to-day, but is also simple for administrators to manage and setup. In fact, if you aren't set-up in one hour, the first month of your subscription is on us. LoginTC can help you reduce your insurance costs and meet compliance regulations with ease.Starting Price: $3/month/user -
13
OpenOTP Security Suite
RCDevs
OpenOTP Security Suite is a European Enterprise-grade Security all-in-one Solution for Identity & Access Management (IAM), including : - Multi-Factor Authentication (MFA/2FA) with U2F / OTP, applicable even for Legacy Applications - Federation Services (SSO with OpenID & SAML / ADFS) - Network Access Control (protecting Wifi & Ethernet Swiches) - VPN security (via an included Radius Bridge), designed specifically for remote work - Windows logins & Remote Desktop Services (RDS) OpenOTP Security Suite combines mobile technology with proven security standards to offer professionals and non-professionals the best alternative, bringing modularity and flexibility to suit any infrastructure's needs. OpenOTP Security Suite is an enterprise-class European security solution designed for installation on-premises or in a private cloud. ++ Free Token App (and compatible with most existing hardware and software tokens) ++ Free 30-day Trial ++ Freeware (<25 users)Starting Price: €1.85/User/M -
14
HYPR
HYPR | The Passwordless Company
HYPR fixes the way the world logs in. Organizations are faced with the challenge of achieving secured and seamless authentication coupled with a flawless user experience at a time when it’s more critical than ever. HYPR’s passwordless multi-factor authentication (PMFA) platform decouples authentication from the organization’s current and future identity providers and eliminates the traditional trade-off between security and user experience by providing uncompromising assurance and consumer-grade experience with true passwordless and phishing-resistant MFA. The solution is trusted by more than 60M users worldwide. With deployments taking hours rather than weeks or months, organizations decrease the risk of attack, increase positive user experience, and lower operational costs.Starting Price: $4.00 per user/month -
15
Kinde
Kinde
Authentication happens at some of the most important, and highly impactful, places in your customers' journey. Take control of user authorization with a passwordless authentication, social integrations, and enterprise SSO. Support the branding of all your customers with custom domains and a fully customisable UI by bringing your own pages and designs. Integrate with complex requirements and run your own code during authentication using our powerful workflows. Organise all your business customers using organizations to easily segergate them and fine tune the authentication experience to their individual needs. Monetize your ideas quickly with Kinde's billing tools. Create subscription plans and collect revenue effortlessly. Kinde adapts to your business model, supporting B2C, B2B, and B2B2C with robust organization management and flexible billing logic that scales with your customers.Starting Price: Free -
16
Edgenexus Load Balancer (ADC/WAF/GSLB)
Edgenexus
Choose us because we offer the easiest to use technology without sacrificing features or performance. We back this up with outstanding support and care, delivered under a fair and cost effective pricing model Our technology is used by the smallest startups with big ideas and small budgets all the way to global enterprises and anything in between. We love them all the same! Easy to use Load balancing, WAF, GSLB and SSO/Pre-Authentication. It is also the Only true ADP Application Delivery Platform where the functionality and lifespan can be enhanced using the app store or applications that you develop in house.Starting Price: $50 -
17
Konfirmi
Konfirmi
Konfirmi gives your website or app easy-to-setup verification (which you can combine or use standalone). Verification methods include: - 2 Factor Authentication / Multi Factor Authentication (2FA/MFA) - SMS/Email verification - True age verification (KBA Checks) - True customer name/address/info verification (KBA Checks) - Biometric Authentication - Single Sign On (SSO). Check age, addresses, photo IDs, more. Quickly add to any website or application. Comply with various USA and other laws. Small Business and Enterprise options. Konfirmi‘s patent-pending system allows you to automatically verify your customer’s information, including age, physical address, email address, phone number, and photo ID in any app, user sign up or registration page, e-commerce store, contact form or survey, or other web-facing system. Quickly start using Konfirmi in your website or application.Starting Price: $19 -
18
Appwrite
Appwrite
Build your entire backend within minutes with just a few lines of code using the frameworks and languages you love. Allowing you to focus on design and innovation instead of tedious and repetitive backend tasks. Products Appwrite Cloud provides you with: - Authentication: 30+ login methods, support for teams, roles, and user labels - Databases: Never paused, fast in-memory caching, advanced permission models, relationships support - Storage: File encryption at rest and transit, built-in image transformation capabilities, advanced compression with WebP/Brotli support - Functions: Automatic deployment from GitHub - Messaging: SMS, email, and push notification support - Real-time: Unlimited subscriptions By utilizing Appwrites’ features, you save time and ensure your products are stable and secure for your end users. With Appwrite, you always own your data, so you never have to fear vendor lock-in.Starting Price: $15 per month, per member -
19
Aserto
Aserto
Aserto helps developers build secure applications. It makes it easy to add fine-grained, policy-based, real-time access control to your applications and APIs. Aserto handles all the heavy lifting required to achieve secure, scalable, high-performance access management. It offers blazing-fast authorization of a local library coupled with a centralized control plane for managing policies, user attributes, relationship data, and decision logs. And it comes with everything you need to implement RBAC or fine-grained authorization models, such as ABAC, and ReBAC. Take a look at our open-source projects: - Topaz.sh: a standalone authorizer you can deploy in your environment to add fine-grained access control to your applications. Topaz lets you combine OPA policies with Zanzibar’s data model for complete flexibility. - OpenPolicyContainers.com (OPCR) secures OPA policies across the lifecycle by adding the ability to tag, verStarting Price: $0 -
20
MonoCloud
MonoCloud
MonoCloud is a developer-focused platform designed to streamline authentication, authorization, and user management for applications across multiple environments, including web, mobile, IoT devices, and more. It enables developers to easily integrate secure and customizable login processes, supporting a range of authentication methods such as passwords, magic links, one-time passcodes, and social logins like Google, Facebook, and Apple. Built with a strong emphasis on reducing user friction, MonoCloud offers a branded and smooth authentication experience. The platform includes advanced features such as mutual TLS, brute-force protection, and global session management, making it a comprehensive solution for handling user access across various applications and devices. In addition, MonoCloud is designed with developers in mind, providing extensive documentation, integration guides, and support for various front-end and back-end frameworks.Starting Price: $0 -
21
Zoho Directory
Zoho
Zoho Directory is a cloud-based identity and access management platform designed to streamline authentication, authorization, and user management for organizations. It offers Single Sign-On (SSO) capabilities, allowing employees to access multiple applications with a single set of credentials, thereby enhancing security and user convenience. The platform supports Multi-Factor Authentication (MFA), adding an extra layer of protection against unauthorized access. Device authentication ensures secure access to both applications and devices, enabling employees to use the same credentials across platforms. Zoho Directory also provides robust provisioning features, allowing IT administrators to create and manage user profiles across various applications directly from the platform, reducing the time spent on repetitive tasks. Integration with existing directories, such as Microsoft Active Directory and Azure AD, is facilitated through directory stores.Starting Price: $1.70/user/month -
22
WSO2 Identity Server
WSO2
WSO2 Identity Server is API-driven, is based on open standards with the deployment options of on-premise, cloud or hybrid. It supports complex IAM requirements given its high extensibility. WSO2 Identity Server helps you do single sign-on and identity federation backed by strong and adaptive authentication, securely expose APIs, and manage identities by connecting to heterogeneous user stores. Leverage the power of open-source IAM in your enterprise to innovate fast and build secure Customer IAM (CIAM) solutions to provide an experience your users will love -
23
Asgardeo
WSO2
Asgardeo helps developers implement secure authentication flows to applications in a few simple steps. Easily integrate single page, regular web, and mobile applications. SDKs that enable working with various technology stacks. Enable social sign-in with Google, Facebook, and GitHub using pre-defined templates (with more to follow). Configure external identity providers that can connect with open standards like OpenID Connect and SAML to your application. Manage your customers, employees, and partners with (default) supported onboarding and management workflows. Use Asgardeo provided directory or plug in your own LDAP or Active Directory via an agent. Choose from a variety of methods such as Email OTP, SMS OTP, and TOTP for 2FA. Define multiple steps and configure options according to user requirements. Unlock the full application experience by focusing on the business logic and enable login and secure access to end-users. -
24
IDmelon Authenticator
IDmelon Technologies
IDmelon Authenticator, a mobile app available on Google Play and App Store, allows you to use your ubiquitous smartphone into a FIDO certified security key so as to easily and securely log into websites, online accounts, and apps on your PC. This means when you want to log into your accounts such as Microsoft or GitHub, instead of the traditional way of presenting your username and password, you add a layer of security by using your username and security key., which is an easier, stronger, and phishing-resistant way of authentication. In addition to it, IDmelon Admin Panel, which is a dashboard available on our website for login to manage users and security keys, enables organizations to deploy passwordless authentication within their companies overnight to protect their data and workforce.Starting Price: $5.99/user/year -
25
Ory
Ory
The missing web-scale API for identity and access control. 10x your security, user experience, and PII compliance today. Build secure apps on top of the Ory Network and reach new customers in any geopolitical region of the world with the best login experience ever. Login is more than a username and password. Building it from the ground up is time-consuming and dangerous. Ory's API-first microservice architecture makes it straightforward to integrate projects at any stage. Pay for usage, not features. Get advanced multi-factor to auth on every Ory subscription plan. Plus advanced permissions, SSO, OAuth2, OIDC, multi-tenancy, and so much more. Ory is made for high-performance, high-scale applications in any cloud. Built with developers in mind, Ory lets you quickly build your on-brand user experience and integrate it into your software stack. Ory's focus on open standards and automated data import capabilities makes migrating from legacy systems straightforward.Starting Price: $29 per month -
26
Teleport
Teleport
The Teleport Infrastructure Identity Platform modernizes identity, access, and policy for infrastructure, for both human and non-human identities, improving engineering velocity and resiliency of critical infrastructure against human factors and/or compromise. Teleport is purpose-built for infrastructure use cases and implements trusted computing at scale, with unified cryptographic identities for humans, machines and workloads, endpoints, infrastructure assets, and AI agents. Our identity-everywhere approach vertically integrates access management, zero trust networking, identity governance, and identity security into a single platform, eliminating overhead and operational silos. -
27
Secfense
Secfense
Protect your company, employees, and customers with simpler and stronger authentication. Deploy 2FA in minutes, not weeks. 2FA (and other user access security policies) built into the fabric of the infrastructure, not rigidly fixed to the applications. Enabling the use of any 2FA methods available on the market now and in the future without changing the core. Protection is available across the entire organization, spanning from on-premise, public and private cloud. Secfense is deployed in between your users and the applications they access. It learns the traffic patterns related to authentication. It can then enforce multi-factor authentication login and other sensitive actions without interfering with the applications existing code or database. Up-to-date 2FA methods are always available on the platform. Application changes don’t affect Secfense and applied methods. Take control over session expiration rules across all apps. Don’t rely on VPNs, base trust on users and their devices.
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