Joshua Eichorn has started gathering a list of AJAX resources over on his site, seeking to provide a more centralized place for all things AJAX.

I've started compiling lists of the various AJAX resources I've found. This is mainly to help me out in some of the writing I've been doing but I thought it would help all of you out as well.

Some people do this sort of thing with tons of blog posts, but I'm not really happy with the sort of organization system you get for that sort of thing. [...] The content is pretty basic right now since I try to write a small overview for everything on the list and It takes me time to refind things I read but forgot to bookmark. If you know of anything that fits into one of the categories let me know on a comment to this post thanks.

So far, there's only two, maybe three things in each category, but with all of the AJAX that's out there right now, I know it will fill up fast. So, if you'd like to contribute your favorite site, post a comment here with the information on it (and maybe even a brief summary of the page) for him to add to the list...