Browse free open source Cryptography software and projects below. Use the toggles on the left to filter open source Cryptography software by OS, license, language, programming language, and project status.

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  • 1
    RetroShare

    RetroShare

    [WARNING] Project has moved to http://github.com/Retroshare/Retroshare

    [IMPORTANT] Retroshare is now distributed on Github. Please go to http://retroshare.net to find the latest releases and sources. RetroShare is a cross-platform, secured and decentralized communication system. It lets you to securely chat, share photos, videos, and more with family and friends, using OpenPGP to authenticate peers and OpenSSL to encrypt all communication.
    Downloads: 12 This Week
    Last Update:
    See Project
  • 2
    WASTE is a mesh-based workgroup tool that allows for encrypted, private communication between distant parties on the internet, independant of local network organization.
    Downloads: 8 This Week
    Last Update:
    See Project
  • 3
    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: 6 This Week
    Last Update:
    See Project
  • 4
    ICMP-Chat is a simple chat for the console that uses blowfish encrypted packets for communication.
    Downloads: 3 This Week
    Last Update:
    See Project
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  • 5
    Novel Insight Inner Circle

    Novel Insight Inner Circle

    Graphical message and file encryption tool

    Novel Insight Inner Circle is a message and file encryption tool for Windows. The software is developed in Java and requires 64bit Java JRE. The encryption uses AES-256 twice so it is harder to crack than the industry standard pure AES 256bit implementation (theoretical key size is 512 bit). The software writes encrypted data in ASCII text format which can be cut'n'pasted to messaging apps or to emails and back to Inner Circle when decrypting data. IMPORTANT: The software requires new OpenJDK 16 (Not Oracle's J2RE 1.8) to run. Install, for example, AdoptOpenJDK for Windows. NOTE: By using encryption twice the implementation is (in theory) vulnerable to Meet-In-The-Middle attack reducing key size to 256bit but the attack still requires 2^256 bytes of memory making it impossible in practice.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 6
    A resource-conscientious, flexible, modular, platform-independent, scalable and robust server based on ircd-ratbox.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 7
    An original bruteforce-based encryption/decryption system. BBE was originally conceived to chat with encrypted text on IRC. mIRC and X-Chat support BBE via script addon. BBE can also encrypt MIME encoded files. Blowfish encryption is currently supported.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    Bouncer en localhost o lan, que permite capturar el trafico hacia un determinado canal de irc, cifrandolo con Rijndael, Serpent o Twofish. Y mostrando una salida por el canal en base64. Ideal para paranoicos.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    A plugin for the popular OS X IRC client Colloquy providing Blowfish-encryption
    Downloads: 0 This Week
    Last Update:
    See Project
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  • 10
    Gloster is a secure and decentralized p2p program for small communities working under Linux and Windows
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    Haskell User-Submitted Libraries includes anything we can get our hands on and clean up for general use, as well as new libraries that would be useful to the general Haskell community. Submit your libs, or join the project to create needed libs!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    KINEC Is Not Encrypted Chat is a client/server chat program designed to keep you secure. It uses strong algorithms for encryption and authentication and will not compromise security.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    Kamikaze IRCD is a premium class of russian IRCD based on bahamut ircd core. Full SSL support and unicode charset mappings/nicknames.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Messa is a fully distributed instant messaging and presence application.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    No-Name Instant Messenger is a secure (strong cryptography), cross platform communications program that supports existing IM networks (AIM, Yahoo, ICQ, etc.).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    SecuXabber

    SecuXabber

    A secure Jabber-client for Android using strong encryption

    SecuXabber is a secure Jabber-client for Android that bases on Xabber and uses a strong, asymmetric enryption that works on top of the XMPP protocol. A key pair is generated on application start-up. Users can send their public key to other SecuXabber users via Bluetooth. This ensures the origin of the public key because people do a face-to-face check during key exchange. After the keys are imported by both users, all communication between them is done fully encrpyted using a strong 4096 bit end-to-end encryption.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    A peer-to-peer chat program that uses public key encryption (via Gnu Privacy Guard) to keep your conversations from the eyes of packet sniffers (*Cough* Carnivore *Cough*)
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    The Solitox Community system provides an integrated real-time chat service, web interface, and a scalable infrastructure for adding more services with common credentials. These interfaces allow a greater level of communication for your users.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    Ultramagnetic is a concurrent fork of GAIM that provides strong end-to-end encryption using libgcrypt and anonymous routing using the Six/Four protocol.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    This is an IRCd based off of bahamut-1.4.35 that includes IPv6 and SSL support. We will be adding more advanced features as well such as host hiding (+x), IRC operator levels, halfops support, more channel modes, etc.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    This software shall enable users to send / receive denyable messages: Nobody can prove a message is from / for a specific user. Messages can be made private (by using password) or are public. All messages have an expiration time/date / event
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Java Based Cryptographic P2P Messaging Client, is based on a client-server architecture. The Client is made in SWING. The server is text based. Server keeps tabs on presense and the users public keys. Presentation: http://varun.accosted.net/talks.php
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    TCPFile is a friend to friend file sharing / instant messaging Java (1.6) program offering zipped and fully encrypted (RSA, AES) communication.
    Downloads: 0 This Week
    Last Update:
    See Project
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