Let's Encrypt / Buypass / ZeroSSL and other ACME-servers clients
360-FAAR Analyze FW1 Cisco Netscreen Policy Offline Using Config/Logs
A tiny, fast encryption tool in C
ISC lets you encrypt & decrypt text and files of any type up to 4GB
Multithreaded Proxy Enumeration Utility
Perl Hacking Tools (BackTrack)
Perl ls-like command shows mtime, atime, ctime for Linux