Mac users interested in Redsn0w by dev team generally download:
A cross-platform jailbreaking, unlocking, and customizing tool for iPhones and iPod touches. Customizations include boot logos, recovery logos, and "verbose" boot. It's a standalone program that doesn't use iTunes (no custom IPSWs are involved).
Apple Firmware 4.1-5.1.1 supported. Hardware supported.
