Our mission is to serve as a reference point for Apple II software, hardware and the like. It is not intended to be another Apple II history site, but more targeted toward reference materials such as hardware configuration, compatibility guides, repair tips, hardware hacks and mods, and related sub-topics. MediaWiki has been chosen as the presentation [...]

Not trying to steal any thunder, I think Ben Heckendorn’s portable IIgs definitely raises the bar. No questions there. But.. if there had been an Engadget in the days of GWB’s loosing election for a second term, I think I would have been there with it. It’s really hard to believe it’s been that long. [...]

The Original csa2 (comp.sys.apple2) usenet FAQ is available via wikimarkup and is an ongoing community project.  Interested in helping out? Check out http://apple2.info/wiki for information on how to get involved!

The Apple II Web Reference, originally located at http://apple2.org has been updated and converted to wiki markup. The A2 Web Reference is an Apple II hardware compatibility matrix for such things as disk drives, memory cards, SCSI cards, monitors, etc. 

This ProDOS 8 Technical Reference is viewable as an inline complete document, (may not work with some browsers) or as individual chapters.
ProDOS 8 P8_Tech_Ref_Inline Technical Reference - COMPLETE DOCUMENT
or single chapters: P8_Tech_Ref