Keybase Go library, client, service, OS X, iOS, Android, Electron
Aviator hack: seed-inspection of aviator crash predictor & aviator app
Open source disk encryption with strong security for the Paranoid
VanitySearch is a Bitcoin address prefix lookup tool.
Security Extensions to File Managers
Single Linux or Windows binary for secure text encryption
antigift is simple cross-platform, files & folders encryption tool
The Best file security app.
Encrypted volumes through command line
Symmetric File and Text Encryption
File encryption and decryption utility
Open source file encryption software
DIY Electronic Shelf Label Management System
A powerful tool for cracking the Vigenère cipher
Solving the Satoshi Puzzle
Powerful webdav client and sync tools with client-side AES encryption
A simple XOR file encoder.
A password vault with client-side encryption and nice-looking UI
Open source file encryption software
Portfolio Secure 22 [Improved.Simplified.Alternative]
binary encryption archiver
A simple file/folder encryption application based on the 7zip-full.
An experimental cloud storage service featuring client-side encryption
57 Hash Functions In One Program, plus each with HMAC or KMAC
irreversible encryption with time self-destruction