WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
For full, incremental, compressed and encrypted backups or archives
C++ cryptographic library (modern hash functions, ciphers, KDFs)
Powerful webdav client and sync tools with client-side AES encryption
antigift is simple cross-platform, files & folders encryption tool
The safest way to store private data in untrusted (cloud) environments
52 Hash Functions In One Program, plus each with HMAC or KMAC
GILIB Large Integer Arithmetic Library
Programa de Criptografia.
An utility that calculates and verifies Grøstl hashes of files
sha3sum - A demonstration of the Keccak permutation.
A tiny, fast encryption tool in C
A family of FLEA-inspired CSPRNGs and Stream Ciphers
xxteac - XXTEA Encrypter/Decrypter
Python Based Brute Force Password Cracking Assistant By Clownsec
A program to generate random reciprocal bigram tables