Here’s some great software for developers: (more detail and links to follow)

Free

• MacVim – Vim for Mac
• Time Tracker – Keep track of how much time you spend on projects
• Xcode – (duh!)
• Mac Ports – Great way to get common open source utilities on  your Mac
• Reducticon – Makes it easier to create iOS App Icons
• XQuartz – Provides an X11 server for your Mac.  Useful if you’re connecting to Unix/Linux systems.

Commercial

• Rapidweaver – One of the simplest ways of creating decently sophisticated static websites on a Mac
• AppViz 2 – Keep track of your iOS/Mac App sales
• ColorSchemer Studio – A nice little tool to help you create coherent colors