Browse free open source Cryptography software and projects for Windows and Linux 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
    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: 19 This Week
    Last Update:
    See Project
  • 3
    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: 9 This Week
    Last Update:
    See Project
  • 4
    The Martus (TM) Bulletin System is used by human rights and social justice groups to track violations. This Java program is as easy to use as email. Bulletins can be encrypted or searched, and can be backed up to a remote server. See www.martus.org.
    Downloads: 2 This Week
    Last Update:
    See Project
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  • 5
    Codegroup

    Codegroup

    A Java application for transferring computer files in 5 letter groups

    Codegroup is a Java application that will allow one to convert binary (or text) computer files in to 5 letter codegroups for transmission over email, landline telephones, radioteletype or Morse Code. Codegroup has internal error correction & limited cryptography capabilities. Codegroup : ZZZZZ YBPIL AIAIG FMOPP CPAAA DGNGP GPGPA ADNJN ELJKO ELIMO GEOHF KIFGP IFBCB PKCPI YJMHE PHBHP PPOBH NCOHD AKLLL AGHFP DEGEF LKELC EAIJI ABAGP AHPPO IHHPH OHPDF YNFPB ALEPO KMPKP Once this program has a graphical user interface, an Enigma like subsystem must be devised for data whitening. For content encryption, the use of Java's facilities is being considered as a long term option. This project's initial sourcecode is related to : http://www.fourmilab.ch/codegroup/ http://winmorse.com/ https://bitbucket.org/bgneal/cpp-enigma http://www.whence.com/minimodem/ For the User Interface http://www.oracle.com/technetwork/java/javafx/tools/
    Downloads: 2 This Week
    Last Update:
    See Project
  • 6
    This program allows you to establish cryptographically secure and decentraliced conversations over untrusted telecommunication links and IRC networks.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    Messa is a fully distributed instant messaging and presence application.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    Plum Harbor

    Plum Harbor

    An open-source file sharing app built using Next.js and Perplexity.

    An open-source file sharing app built using Next.js and Perplexity. The app employs ML-KEM-1024, ChaCha20, Serpent-256, and HMAC-SHA512 to ensure data confidentiality and integrity. The app is also equipped with a dedicated password vault. Check it out at https://plum-harbor.netlify.app/ GitHub page: https://github.com/Northstrix/plum-harbor Codeberg page: https://codeberg.org/Northstrix/plum-harbor The app is available in English and Hebrew. German version is available here: SourceForge: https://sourceforge.net/p/plum-harbor-deutsch GitHub: https://github.com/Northstrix/plum-harbor-deutsch Codeberg: https://codeberg.org/Northstrix/plum-harbor-deutsch Deployed app: https://plum-harbor-deutsch.netlify.app/
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    SPipe (Secure Pipe) is a patch of mod_ssl package which allows the same corporate web server to be used as a secure access door to internal servers that do not use HTTPS protocol, while also retaining normal web server functionality for all HTTP requests
    Downloads: 0 This Week
    Last Update:
    See Project
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  • 10
    With Tiger Envelopes you can stop snoops from reading your email. Same email client. No extra steps. One click to install on Windows and Linux. Configures Outlook, Thunderbird, and KMail. Supports GPG, PGP, Bouncy Castle encryption.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    This project aims at producing an efficient P2P client for the sharing of contents in anonymous / secure manner, using the latest techniques in peer protocols such as anonymisation, load balancing, gridstorage.(See news below for current project status)
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    mBuddy is a project with the initial goal of allowing users of mobile devices (Java, J2ME) the option to find others based on interests, diet & other factors. Objectives are to allow intelligent, conditional, secure exchange of contact info, A/V & more.
    Downloads: 0 This Week
    Last Update:
    See Project
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