"The Annual Conference for Leading Edge Developers"; a multi-day round-the-clock ritual involving gallons of soda, heinous hacks, and lots of camaraderie. Not to be missed! http://www.machack.com/
Develop software for Macintosh platform. On this site users can find information about FineReader 5 Pro, development and layout software. http://www.softformac.com/
Good general resource including Michael Swaine's subversive perspective on the world of Macintosh development updated each month. Offers source code, online search, and book reviews. http://www.ddj.com/columns/fifth/