Add digital signatures to PDF documents - GUI and CLI, cross-platform
Powerful webdav client and sync tools with client-side AES encryption
cross-platform, encryption application
57 Hash Functions In One Program, plus each with HMAC or KMAC
Encrypt a file with a password, right in your browser
UFONet - Denial of Service Toolkit
Free portable cross-platform graphical multi-user password manager
cross-platform (Java) file encryption and archiving tool
antigift is simple cross-platform, files & folders encryption tool
yubikey-agent is a seamless ssh-agent for YubiKeys
C++ cryptographic library (modern hash functions, ciphers, KDFs)
OpenSC - tools and libraries for smart cards
HOFAT - graphical Hash Of File And Text calculator, 100%-pure Java
AES Cipher, Base64 encoder, SHA calculator
Base64 encode (or decode) files of any type with this lightweight tool
GMR digital signature system
Support Tools for OpenSSH with multiple agents
Open Source Security tool to audit hashed passwords.
[WARNING] Project has moved to http://github.com/Retroshare/Retroshare
Juggernaut v1000 Anti-Cryptography