IPL collection on web apps

The Internet Public Library has a special collection of links dedicated to Web Applications.  It's a couple of years old, so a lot of the "hot new stuff" isn't there, but the solid stand-bys are here, and I was able to use this site a few times to answer user questions in the last year.  I recommend bookmarking it as a potential research tool.  You never know!  Note to IPL: please update this!  We'd love you to pieces if you did.