WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
For full, incremental, compressed and encrypted backups or archives
360-FAAR Analyze FW1 Cisco Netscreen Policy Offline Using Config/Logs
Encryption/Decryption tool for words/hash/digits/encoded text
Detector of Integer Vulnerabilities in Software Portability
Free-SA is report generating tool for web, proxy and mail log files
Set of useful tools for payment service development