web2.0リスト
似たような名が数あるweb2.0カンパニーのリストを集めたweb2list。
If only there were a place to go where every pastelled big-font Javascript palace on the web was indexed ... but wait! There is! The Web 2.0 List has a bazillion companies (disclaimer: my metric bazillion may vary from your imperial bazillion) and they're conveniently (wait for it) tagged.
http://www.web2list.com/
http://www.sacredcowdung.com/archives/2006/03/all_things_web.html
http://radar.oreilly.com/archives/2006/04/web_20_directory.html