Open Source Java Security Apps for Android

Java Security Apps for Android

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Browse free open source Java Security Apps for Android and projects below. Use the toggles on the left to filter open source Java Security Apps for Android by OS, license, language, programming language, and project status.

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  • Context for your AI agents Icon
    Context for your AI agents

    Crawl websites, sync to vector databases, and power RAG applications. Pre-built integrations for LLM pipelines and AI assistants.

    Build data pipelines that feed your AI models and agents without managing infrastructure. Crawl any website, transform content, and push directly to your preferred vector store. Use 10,000+ tools for RAG applications, AI assistants, and real-time knowledge bases. Monitor site changes, trigger workflows on new data, and keep your AIs fed with fresh, structured information. Cloud-native, API-first, and free to start until you need to scale.
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  • 1
    Block This

    Block This

    Free DNS based Ad Blocker for Android

    Block This 3.1 is a free and open source ad blocker for Android that works in all apps and browsers! It provides the additional benefits of malware protection, increased browsing speed and reduction of mobile data traffic. Block all in-app and browser advertisements, including video and audio ads, popup ads, banners, tracking cookies. Block This takes care about your security with its antivirus features! We've included a large list of common malware distributors to keep you safe from viruses. According to our average estimates, by blocking all of the ads on your Android phone, you can save up to 35% of your data plan. Bypass your internet provider censorship and access parts of the web that were previously inaccessible for you. Block This is also Open source, which means that anyone can look at, read and suggest improvements to the code base. If you are a developer you can contribute by creating a pull request to our GitHub repository.
    Downloads: 20 This Week
    Last Update:
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  • 2
    Haven

    Haven

    Protect personal spaces and possessions without compromising privacy

    Haven is for people who need a way to protect their personal spaces and possessions without compromising their own privacy, through an Android app and on-device sensors. Haven is for people who need a way to protect their personal areas and possessions without compromising their privacy. It is an Android application that leverages on-device sensors to provide monitoring and protection of physical areas. Haven turns any Android phone into a motion, sound, vibration and light detector, watching for unexpected guests and unwanted intruders. We designed Haven for investigative journalists, human rights defenders and people at risk of forced disappearance to create a new kind of herd immunity. By combining the array of sensors found in any smartphone, with the world’s most secure communications technologies, like Signal and Tor, Haven prevents the worst kind of people from silencing citizens without getting caught in the act.
    Downloads: 9 This Week
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  • 3
    Universal Password Manager

    Universal Password Manager

    Store all your passwords in one secure encrypted database.

    Universal Password Manager allows you to store all your passwords in one highly secure encrypted database. Its strengths are simplicity, portability and security (uses 128bit AES encryption). UPM is available on Android, Windows, OS X & Linux.
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    Downloads: 36 This Week
    Last Update:
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  • 4
    Droid Pentest help you to find all android apps for penetration testing and hacking so you can make complete penetration test platform .
    Downloads: 18 This Week
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  • All-in-one security tool helps you prevent ransomware and breaches. Icon
    All-in-one security tool helps you prevent ransomware and breaches.

    SIEM + Detection and Response for IT Teams

    Blumira’s detection and response platform enables faster resolution of threats to help you stop ransomware attacks and prevent data breaches. We surface real threats, providing meaningful findings so you know what to prioritize. With our 3-step rapid response, you can automatically block known threats, use our playbooks for easy remediation, or contact our security team for additional guidance. Our responsive security team helps with onboarding, triage and ongoing consultations to continuously help your organization improve your security coverage.
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  • 5
    DNS-Based Host Blocking for Android

    DNS-Based Host Blocking for Android

    DNS-based Host Blocker (and lightweight ad blocker) for Android

    This is a DNS-based host blocker for Android. In the default configuration, several widely-respected host files are used to block ads, malware, and other weird stuff. On the first start, you must manually update the hosts files (using the refresh button) before the service can work correctly (issue #1); and you must also update the hosts files yourself regularly for now. Items in the hosts and DNS servers lists can be moved around and removed) of the list using standard RecyclerView interactions (long press makes the entry movable, swipe to either side removes it). For hosts, a later entry overrides a previous entry; for DNS servers, the first server is preferred. There's also no validation of input, so DNS servers that are not valid IPv4 addresses are not rejected, neither are URLs for DNS server entries (we intend to support URLs in the future, so you can point the app to a remote list of servers).
    Downloads: 1 This Week
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  • 6
    encrypt

    encrypt

    cross-platform, encryption application

    encrypt is a multi-platform, file encryption application. Binary packages are currently provided for Arch, Debian, Fedora, MS Windows, Android and OS X. For further details, including the latest source code, visit https://albinoloverats.net/projects/encrypt
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    Downloads: 9 This Week
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  • 7
    Revenssis Ethical Hacking Suite

    Revenssis Ethical Hacking Suite

    Fully featured network, wireless and web app pentesting suite.

    Nicknamed as the "Smartphone Version of Backtrack", Revenssis Penetration Suite is a set of all the useful types of tools used in Computer and Web Application security. Tools available in it include: Web App scanners, Encode/Decode & Hashing tools, Vulnerability Research Lab, Forensics Lab, plus the must-have utilities (Shell, SSH, DNS/WHOIS Lookup, Traceroute, Port Scanner, Spam DB Lookup, Netstat... etc). All these fitting in an application approx. 10MB (post installation).
    Downloads: 26 This Week
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  • 8
    StrongKey FIDO Server (SKFS)

    StrongKey FIDO Server (SKFS)

    FIDO® Certified StrongKey FIDO Server (SKFS)

    An open source implementation of the FIDO2 protocol to support passwordless strong authentication using public-key cryptography. Supports registration, authentication (all platforms), and transaction authorization (for native Android apps).
    Downloads: 23 This Week
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  • 9
    MicroZip

    MicroZip

    Create,extract and encrypt ZIP,GZIP,TAR,BZIP2,TAZ files on Java mobile

    MicroZip is a powerful file compression and encryption utility for mobile phones which allows you to create and extract compressed archives in multiple formats and encrypt sensitive information with powerful AES-256 encryption. MicroZip can create and extract ZIP,TAR,TGZ,TBZ2 archives and extract many other formats as JAR,GZ,BZ2,TBZ,WAR,BZIP2,GZIP,Z,TAZ,CBZ etc. MicroZip allows you to extract selected files without extracting the whole ZIP archive. MicroZip also supports encrypted ZIP archives with both classic ZIP encryption and AES 256 encryption algorithm.
    Downloads: 7 This Week
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  • The Most Powerful Software Platform for EHSQ and ESG Management Icon
    The Most Powerful Software Platform for EHSQ and ESG Management

    Addresses the needs of small businesses and large global organizations with thousands of users in multiple locations.

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  • 10
    PasswdSafe
    Port of the Password Safe application to Android
    Downloads: 3 This Week
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  • 11
    wolfSSL
    The wolfSSL embedded SSL library (formerly CyaSSL) is a lightweight, portable, C-language-based SSL/TLS library targeted at IoT, embedded, and RTOS environments primarily because of its size, speed, and feature set. It works seamlessly in desktop, enterprise, and cloud environments as well. wolfSSL supports industry standards up to the current TLS 1.2 and DTLS 1.2, is up to 20 times smaller than OpenSSL, offers a simple API, an OpenSSL compatibility layer, OCSP and CRL support, is backed by the robust wolfCrypt cryptography library, and much more. wolfSSL relies on the FIPS 140-2 validated wolfCrypt library for all cryptographic functionality. Visit http://wolfssl.com/wolfSSL/fips.html for more info!
    Downloads: 8 This Week
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  • 12
    silvertunnel - Java lib+browser for TOR
    silvertunnel.org is a project that provides an end-user browser, a Java library and additional Java security tools to easily access anonymity networks such as the Tor (torproject.org) network. Secure and easy to use. Tor4Java and Tor Browser. Attention: see project status on page https://sourceforge.net/p/silvertunnel/discussion/962278/thread/83dc2d02/#
    Downloads: 1 This Week
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  • 13
    Smoke Crypto Chat Messenger for Android

    Smoke Crypto Chat Messenger for Android

    Smoke: Android Crypto Chat Messenger

    Smoke is an encrypting chat messenger for Android written in Java. Please read the Web site for more information: https://textbrowser.github.io/smoke/ (original, current) https://www.amazon.com/dp/3752691999/ https://smokeappope.sourceforge.io/ (old, third party archive) Smoke App OPE - Open Personal Encryption Download Android APK Installer: https://sourceforge.net/projects/smokeappope/files/ Smoke Source: https://github.com/textbrowser/smoke SmokeStack Source: https://github.com/textbrowser/smokestack (Android) https://github.com/textbrowser/spot-on (Desktop) Smoke appears to be one of the first projects with an open source mobile encrypting chat server., an decentralized and easily-configurable chat server. Smoke is known as the first mobile McEliece Messenger: https://tarnkappe.info/artikel/english/mceliece-messaging-smoke-crypto-chat-the-first-mobile-mceliece-messenger-published-as-a-stable-prototype-worldwide-279847.html
    Downloads: 2 This Week
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  • 14

    FileCrypt

    Android application to do AES-128 bit encryption on all types of files

    This is an android application able to perform AES-128 bit encryption on all types of files. Its tested encryption speed for 1080 HD video on android device is 3.43 MB per second, and decryption speed is 6.25 MB per second for android device with 3 GB RAM and MT6735 Quad-core 1.3 GHz CPU.
    Downloads: 1 This Week
    Last Update:
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  • 15
    The aim of this android application is to provide a secure storage for files on the phone. By using asymmetric cryptography the application allow the user and other apps to encrypt the files using a public key so without the need of a encryption password.
    Downloads: 0 This Week
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  • 16
    AppUse

    AppUse

    Android Pentest Platform Unified Standalone Environment

    AppSec Labs recently developed the AppUse Virtual Machine. This system is a unique, free, platform for mobile application security testing in the android environment, and it includes unique custom-made tools created by AppSec Labs. AppUse Pro v3 is now available in AppUse website:
    Downloads: 0 This Week
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  • 17
    Briar
    Briar is a messaging app designed for activists, journalists, and anyone else who needs a safe, easy and robust way to communicate. Unlike traditional messaging tools such as email, Twitter or Telegram, Briar doesn't rely on a central server - messages are synchronized directly between the users' devices. If the Internet's down, Briar can sync via Bluetooth or Wi-Fi, keeping the information flowing in a crisis. If the Internet's up, Briar can sync via the Tor network, protecting users and their relationships from surveillance.
    Downloads: 0 This Week
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  • 18
    Credit Card Vault

    Credit Card Vault

    Just an app I developed for my university course

    Credit Card Vault is a simple app that allows you to store the credit card information encrypted with the 3DES encryption algorithm in CBC mode on an Android device. I originally developed this app for my university course, but I also decided to post it on GitHub on Sourceforge. This application is made for educational purposes only. Despite having well-functioning cryptographic features, it may not be reliable. This application is provided with no warranty or guarantees of any kind. Use it at your own risk! Made with the help of the ChatGPT. The Source Code is available in the GitHub repository: https://github.com/Northstrix/Credit_Card_Vault_Android_App Download shortcut: https://sourceforge.net/projects/credit-card-vault/files/V1.0/app-debug.apk/download
    Downloads: 0 This Week
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  • 19
    DROID FINDER
    DROID FINDER will help you to track your phone, identify the user taking a picture using the front camera (i.e. if available) and provide the geographic positioning of the device sending you a SMS with a google maps link.
    Downloads: 0 This Week
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  • 20
    DroidVulMon

    DroidVulMon

    This project is to monitor vulnerability of Android based smartphone

    This project is to monitor vulnerability of Android based smartphone by collecting user's events activated inside of mobile smart work devices. We want to develop an Android Vulnerability Monitoring system (DroidVulMon) by collecting and aggregate diverse events activated from user's mobile device for detecting malicious attacks such as mobile exploits. We provide open source S/W with overall common modules such as collecting events and detecting malicious events.
    Downloads: 0 This Week
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  • 21
    DruidSafe is a password keeper written in Java which is currently available as client application for the Android platform.
    Downloads: 0 This Week
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  • 22
    F-Talk P2P Encrypted Secure Voip

    F-Talk P2P Encrypted Secure Voip

    F-Talk cross-platform p2p encrypted secure voip software

    This project connect to two peers directly ( using without any central server, stun server ) together with 128bit encrypted secure voip communication. http://ftalk.armanasci.com/guide Spefications * Peer to peer direct connection without using any central dedicated server. ( First basic part of the security ) * 128bit AES Symmetric end-to-end encryption PCM datas. ( Second basic part of the security ) * 64bit Base64 Encoding transferred server side info. * Ipv4 and Ipv6 Supoort. * Full-Dublex Communication. * Full Supports Windows,Linux,Mac and Android platforms. * Complately open source project. http://ftalk.armanasci.com/ http://blog.armanasci.com/ http://blog.armanasci.com/contact-me/
    Downloads: 0 This Week
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  • 23
    Google Authenticator Android

    Google Authenticator Android

    Open source fork of the Google Authenticator Android app

    Google Authenticator for Android is the open-source two-factor authentication app that generates time-based (TOTP) and counter-based (HOTP) one-time codes entirely on the device. It’s designed to be simple, offline, and standards-compliant, so any service that supports OATH OTP can interoperate with it. The app streamlines enrollment via QR codes or manual key entry, then displays rotating numeric codes with clear account labels to reduce mistakes during login. Because secrets are stored on the device and codes are computed locally, it works even without a data connection and avoids server-side dependencies. The UI focuses on clarity and safety cues—timers, account naming, and basic management—to make 2FA adoption accessible to non-experts. For developers, the project doubles as a reference implementation of OTP enrollment, storage, and code generation on Android.
    Downloads: 0 This Week
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  • 24
    "HelloWorld goes mobile" is a decentralized social network for mobile phones running under Google Android. It is based on XML and different JAVA encryption technologies. The software-structure is based on the desktop-orientated project "HelloWorld".
    Downloads: 0 This Week
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  • 25
    LVC-Adblocker-Android

    LVC-Adblocker-Android

    An InApp and Browser Adblocker based on hosts file blacklists

    An InApp and Browser Adblocker based on hosts file blacklists
    Downloads: 0 This Week
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