WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
For full, incremental, compressed and encrypted backups or archives
57 Hash Functions In One Program, plus each with HMAC or KMAC
Robust and flexible VPN network tunnelling
The safest way to store private data in untrusted (cloud) environments
Powerful webdav client and sync tools with client-side AES encryption
antigift is simple cross-platform, files & folders encryption tool
C++ cryptographic library (modern hash functions, ciphers, KDFs)
Multi hash crack suite
Send Mime and Smime Emails to Any Type of Mail Server
GILIB Large Integer Arithmetic Library
Comfortable hash-tool for texts and files
Secure mail + Tor gateway
A tool to encrypt files in Russian.
Portable, secure and open source AES256 password manager
Secure Striker Manager