ctrshell is a powerfull php webshell for penetration testing.
A minimal CSPRNG reflecting the Zen of cipher design
A tiny, fast encryption tool in C
ISC lets you encrypt & decrypt text and files of any type up to 4GB
Web-based application to execute shell commands.
AFX Backdoor shell demonstration.
Perl Hacking Tools (BackTrack)
Various programs accessed through a shell developed by a teenager.
partitioning backup recovery and all kind of boot loaders