WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
For full, incremental, compressed and encrypted backups or archives
antigift is simple cross-platform, files & folders encryption tool
Robust and flexible VPN network tunnelling
Powerful webdav client and sync tools with client-side AES encryption
Send Mime and Smime Emails to Any Type of Mail Server
Secure mail + Tor gateway
Encryption/Decryption tool for words/hash/digits/encoded text
partitioning backup recovery and all kind of boot loaders