Browse free open source Cryptography software and projects for Mac 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
    Mailcrypt is an Emacs Lisp package which provides a simple interface to public key cryptography with PGP [and now GnuPG!]. Mailcrypt makes strong cryptography a fully integrated part of your normal mail and news handling environment
    Downloads: 10 This Week
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  • 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: 9 This Week
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  • 3
    Mixmaster is an anonymous remailer. Remailers provide protection against traffic analysis and allow sending electronic mail anonymously or pseudonymously. Mixmaster consists of both client and server installations.
    Downloads: 5 This Week
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  • 4
    Cassiopeia's BitMail

    Cassiopeia's BitMail

    Encrypting E-Mail Client

    BitMail is a Proof-of-Concept- / Design-Study for an Qt E-Mail Client. POP3 / IMAP / SMTP / P2P E-Mail-Client. ● Qt E-Mail Client. ● Build-in Encryption to secure E-Mails ● IMAP & POP3 ● Additionally a full decentral P2P Email-Option via the Echo Protocol ● Store Email for Offline-Friends in the P2P Network. ● Chat and Instant Messaging is build in. ● POPTASTIC function (Chat over Email) ● Calendar widget functionality. ● Open Source. BSD License. "Cassiopeia is the tortoise of Momo, which can communicate through writing on her shell and guides into the future." - Wikipedia. Source from: https://sf.net/projects/spot-on/files/ & https://github.com/textbrowser/spot-on
    Downloads: 0 This Week
    Last Update:
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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: 0 This Week
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  • 6
    Commando
    Commando is a military-grade secure communication system.
    Downloads: 0 This Week
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  • 7
    Cryptix OpenPGP is a library which implements the OpenPGP standard (RFC 2440) in Java.
    Downloads: 0 This Week
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  • 8
    DKIM for JavaMail is a small JAR that can be easily implemented in existing Java projects using JavaMail for sending DKIM signed emails.
    Downloads: 0 This Week
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  • 9
    Originally a software partnership between my best friend and myself, Diverse Developments seeks to write "useful stuff", of a very diverse nature... Current projects include a file encoder, and a double-entry accounts package.
    Downloads: 0 This Week
    Last Update:
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  • 10
    EntourageGPG provides powerful email encryption to Microsoft Entourage, using GPG as a backend.
    Downloads: 0 This Week
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  • 11

    GoodCrypto private server

    Secure mail + Tor gateway

    Protect your company's email and browsing with your GoodCrypto private server. * Protects email metadata and resists traffic analysis * Automatic encryption, decryption, and key management * All private keys stay on *your* server * Users don't change their email or browser software * Blocks web malware * Runs on your private server * Completely decentralized
    Downloads: 0 This Week
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  • 12
    ImpraStorage

    ImpraStorage

    ImpraStorage provided a private imap access to store large files

    ImpraStorage provided a private imap access to store large files. Each file stored on the server is split in severals random parts. Each part also contains random noise data (lenght depends on a crypt key) to ensure privacy and exclude easy merge without the corresponding key. An index of files stored is encrypt (with the symmetric-key algorithm Kirmah) and regularly updated. Once decrypt, it permit to perform search on the server and download each part. transfert process is transparent. Just vizualize locally the index of stored files and simply select files to download or upload. ImpraStorage automatically launch the parts to download, then merge parts in the appropriate way to rebuild the original file. Inversely, a file to upload is split (in several parts with addition of noise data), and ImpraStorage randomly upload each parts then update the index.
    Downloads: 0 This Week
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  • 13
    A standard API for accessing OpenPGP and S/MIME email in JavaMail.
    Downloads: 0 This Week
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  • 14
    Securing mails without involving user. Secures them as often as possible if it is possible. Shows security-state and process of mails and mail-partners.
    Downloads: 0 This Week
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  • 15
    PHP functions and classes to add a Domain Key Identified Mail (DKIM RFC 4871) signatures to emails sent by PHP. It is based on the openssl extensions of PHP. It can generate DKIM signature but cannot verify them. Developped and tested on PHP 4.0.
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    Downloads: 0 This Week
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  • 16
    Peer Agent is a system that enable a group of users to carry out automated complex interaction via email services without relying on a trusted third party.
    Downloads: 0 This Week
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  • 17
    A C library with support for logging, configuration, networking, message specification, semaphores, message queues, SSL, timing, epoll and email functionality.
    Downloads: 0 This Week
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  • 18
    This is a simple web tool which allows users of a website to "securely" submit messages and files. They are sent over HTTPS to the server and there encrypted and forwarded to the administrator.
    Downloads: 0 This Week
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  • 19
    Integrating GPG/PGP into various messaging clients.
    Downloads: 0 This Week
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  • 20
    SlimPGP is a pure Java implementation of OpenPGP protocol as defined in RFC2440. Current version implements most of the features in the OpenPGP.
    Downloads: 0 This Week
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  • 21
    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
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  • 22
    UnityCA is a Certificate Authority "front end" based on the Community-Oriented CA (COCA) model, which was primarily developed for non-profit "free CAs." Organizational and end-user interfaces provide trusted web management of the installed CA (eg ElyCA).
    Downloads: 0 This Week
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  • 23
    aamFetch is a utility for fetching your anonymous esub nym messages from the alt.anonymous.messages newsgroup (or other newsgroups). It allows multiple encrypt-subjects to scan, multiple "destination files" to save messages to and random chaff downloads.
    Downloads: 0 This Week
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  • 24
    Camram is a hybrid antispam system combining multiple techniques improving the users e-mail experience.
    Downloads: 0 This Week
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  • 25
    1. project name eXPimenttk (e-SecureOffice) 2.Language Java (req. - at least j2re) 3.target platform - Cross-platform software 4.problem we want to sole- Encryption, Decryption software, File eraser, Messenger, Mailer,Remailer,FireWall 5 target - user
    Downloads: 0 This Week
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