Technical Notes

Technical Notes provide you with the latest technical documentation on Apple technologies and system updates, fixes and errata to Inside Macintosh, as well as programming tips and techniques to advance your development efforts. New Technical Notes are published on a regular basis and are reviewed by Apple engineers for technical accuracy and robustness.

Links:
http://www.apple.com/developer/

Tech Info Library

Apple's Technical Information Library (TIL) is a central listing of product information, technical specifications, and troubleshooting tips for Apple products.

Links:
http://til.info.apple.com/techinfo.nsf/Changes