pwncat - netcat on steroids with Firewall, IDS/IPS evasion, bind and reverse shell, self-injecting shell and port forwarding magic - and its fully scriptable with Python (PSE)
MIT License
Various tips & tricks
MSFvenom Payload Creator (MSFPC)
Reverse Shell Cheat Sheet TooL
A collection of snippets of codes and commands to make your life easier!