Browse free open source Chat software and projects for Windows below. Use the toggles on the left to filter open source Chat 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: 5 This Week
    Last Update:
    See Project
  • 2
    GoldBug - Encrypted Communications

    GoldBug - Encrypted Communications

    Chat Messenger. E-Mail-Client. Websearch. Filetransfer.

    GoldBug is a decentralized & secure communication suite that offers an integrated e-mail client, an instant messenger & a file transfer. Also included is an URL-RSS-DB & a p2p web search. Current vers. w/ McEliece Algorithm. GoldBug has been 2013 - 2023 ten years just another Graphical User Interface of the Spot-On Encryption Suite. Main GUI features: Minimal & colorful Interface with Tabs in the East. Microsoft & Qt MinGW deprecated Win32 & for Compiling: ● https://sourceforge.net/p/goldbug/wiki/compiling As Spot-On implemented the minimal GB-concept & Nuvola Icons, GoldBug has now been fully integrated into Spot-On Win64: Just choose Tabs at East & Mini-View in Options - w/ Nuvola Icons of course! Voilá! & Many Thanks, Pro-Files can be found archived at ● current source: https://github.com/textbrowser/spot-on ● EN Manual: https://www.amazon.com/dp/3749435065 ● DE: https://compendio.github.io/goldbug-manual-de/ ● Study: https://www.amazon.com/asin/dp/3750408971
    Downloads: 27 This Week
    Last Update:
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  • 3
    Dirt

    Dirt

    An IRC proxy to add chat encryption to IRC clients

    Dirt is a multi-platform IRC proxy that adds FiSH-compatible chat encryption (including DH1080 key exchanges) to any IRC client. It can be used as a SOCKS proxy or as a simple bouncer. For security reasons, only localhost connections are allowed.
    Downloads: 11 This Week
    Last Update:
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  • 4
    ufonet

    ufonet

    UFONet - Denial of Service Toolkit

    UFONet - Is a set of hacktivist tools that allow launching coordinated DDoS and DoS attacks and combine both in a single offensive. It also works as an encrypted DarkNET to publish and receive content by creating a global client/server network based on a direct-connect P2P architecture. + FAQ: https://ufonet.03c8.net/FAQ.html -------------------------------------------- -> UFONet-v1.8 [DPh] "DarK-PhAnT0m!" (.zip) -> md5 = [ c8ab016f6370c8391e2e6f9a7cbe990a ] -> UFONet-v1.8 [DPh] "DarK-PhAnT0m!" (.tar.gz) -> md5 = [ 8a4cd86c21db2ad657eb75e6ac0e52d5 ] --------------------------------------------
    Downloads: 7 This Week
    Last Update:
    See Project
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  • 5
    With this application you can encrypt texts or files and chat with friends. You can download a early Android version of the chat client from here: https://drive.google.com/uc?export=download&id=0BwePHaWdtoMweWRyMExqbHZyUEk Hint: I started this project because i have fun to write java apps. This app is not professional. I don´t recommend using this to encrypt very important data (for example of your company ...). Keep this in mind. Happy testing! ;) Please check MD5 after Download. You can find this on the official site of this project (german). You can find a link to this very simple site below. How to start: -------- Windows: double-click on CryptolinN.exe -------- Linux: sh CryptolinN.sh OR FIRST chmod +x CryptolinN.sh THAN ./CryptolinN.sh -------- Console: java -jar CryptolinN.exe --help N = version number
    Downloads: 5 This Week
    Last Update:
    See Project
  • 6
    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: 5 This Week
    Last Update:
    See Project
  • 7
    TCPFile is a friend to friend file sharing / instant messaging Java (1.6) program offering zipped and fully encrypted (RSA, AES) communication.
    Downloads: 3 This Week
    Last Update:
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  • 8
    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: 1 This Week
    Last Update:
    See Project
  • 9
    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: 2 This Week
    Last Update:
    See Project
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  • 10
    Pi is a encrypted, distributed file sharing, IM, and Multi-User Chat tool that is backwards compatible with existing Gnutella networks, and allows for the creation and discovery of Gnutella channels.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 11
    Gloster is a secure and decentralized p2p program for small communities working under Linux and Windows
    Downloads: 1 This Week
    Last Update:
    See Project
  • 12
    Petoron-P2P-Messenger

    Petoron-P2P-Messenger

    minimalistic, secure and autonomous P2P messenger

    Petoron P2P Messenger (P-P2P-M) Architecture: Pure P2P - no servers, no databases Key storage: Keys generated in memory, never stored, erased after use Metadata: Only IP and port exist during the session - everything else is encrypted & obfuscated Encryption: PQS v1.2 - PBKDF2-HMAC-SHA256 (200k), BLAKE2s-MAC, custom stream cipher + fake padding Authentication: BLAKE2s-MAC (16 bytes) - instant failure on any data change Packet obfuscation: --stealth mode - padding, hidden structures Connection: Direct peer-to-peer only Anonymity: No accounts, logins, or phone numbers Third-party access: Impossible without physical access to both peers during session History: No storage — all in RAM, wiped on close Message size: Limited only by RAM & MTU — no artificial limits External dependencies: None DPI/blocking resistance: Harder to detect, can be masked Autonomy: Fully offline until peers connect 26.01.26 Add pqs_chat_tor.py github.com/01alekseev/Petoron-P2P-Messenger
    Downloads: 1 This Week
    Last Update:
    See Project
  • 13
    This ain't your daddy's crypto! We provide a set of C libs and utilities to perform cypherpunk style crypto functions, using your existing OpenPGP keys. Ring signatures; credentials; mental poker; timelines; zero knowledge proofs. Cool stuff!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Ariesbot, is an ircbot, which will be able of doing basic bot functions such as op/deop/kick/ban/moderate. Plus being able to Wu-Ftpd scans, cgi/php scans port scans, subnet scans and scan for vuln version of apache to nosejob.c.
    Downloads: 0 This Week
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  • 15
    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
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  • 16
    This program allows you to establish cryptographically secure and decentraliced conversations over untrusted telecommunication links and IRC networks.
    Downloads: 0 This Week
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  • 17
    A secure collaborative framework that is being used by other projects such as CFAgent (online customer service), CFWeb (pure HTTP communication for CFAgent) and much more in addition to serving as a standalone all-in-one collaboration platform by itself.
    Downloads: 0 This Week
    Last Update:
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  • 18
    e3 = jabber + java + plugins + svg ||| web start link: http://complat.sourceforge.net/jnlp
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    Downloads: 0 This Week
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  • 19
    EnCrypted fiLe Sharing In jaVa
    Downloads: 0 This Week
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  • 20
    The end goal of the FreeMess Project is to produce a cryptographically secure, pseudonymous, cross-platform peer-to-peer Instant Messenger service, piggybacking on FreeNet (http://freenet.sourceforge.net) as a distributed filesystem to hold user data.
    Downloads: 0 This Week
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  • 21
    This tool prevents cheating in Halo. Will also feature a server browser, IM client and smart cheat detection.
    Downloads: 0 This Week
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  • 22
    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
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  • 23
    IRC Defender is a modular perl program for protecting your IRC network against virus drones, general troublemakers, ban evasion, and attacks.
    Downloads: 0 This Week
    Last Update:
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  • 24
    <b>IVJ MUD (Masive Multiplayer Text Game) is a SSL-based soft:<br>-Client (GUI)<br>-Server (GUI)<br>-Applet (GUI)<br>-Protocol (SSL-based, use of localization files that store strings to reduce trafic and allow for instant i18n.<br> LOOKING FOR HELP!</b
    Downloads: 0 This Week
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  • 25
    The K Network will provide a network infrastructure for encrypted anonymous distibuted communication. Distributed chat will be the first application. Goals are anonymity for both sender and receiver, no central point of failure, and scalability.
    Downloads: 0 This Week
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