For full, incremental, compressed and encrypted backups or archives
Powerful webdav client and sync tools with client-side AES encryption
57 Hash Functions In One Program, plus each with HMAC or KMAC
The source code of the In-Browser-File-Encrypter web app
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
Robust and flexible VPN network tunnelling
C++ cryptographic library (modern hash functions, ciphers, KDFs)
Base64 encode (or decode) files of any type with this lightweight tool
RSA 4096 C++ library