Add digital signatures to PDF documents - GUI and CLI, cross-platform
PGP graphical user interface
Tiny application which allows encrypting basic text.
Encrypt and manage secret text data
Implementation of the EDIINT AS2 protocol (RFC 4130)
UFONet - Denial of Service Toolkit
UTF-8 Multi-pass Tableau de Vigenère Encryption Rotation Engine
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
An easy to use 'front-end' to ProxyCrypt 3.X encryption application
A file compressor with AES256CTR and Base32768 binary-to-text encoding
Free and open-source PDF signing and verification application.
A cross-platform crypto-steganography toolkit
Provides encryption & password hashing for your app or Hibernate POJOs
Free portable cross-platform graphical multi-user password manager
Twinkle is an open-source text editor.
yubikey-agent is a seamless ssh-agent for YubiKeys
C++ cryptographic library (modern hash functions, ciphers, KDFs)
BitCrypt is a free ultra-strong encryption that hides text in bitmaps.
python software for cracking and creating SHA and MD5 hashes
Halimede Certificate Authority
Decrypt encryptions without knowing the key or cipher
HOFAT - graphical Hash Of File And Text calculator, 100%-pure Java
Java Encryption Utility.
Certificate Authority administration application
Base64 encode (or decode) files of any type with this lightweight tool