https://RPAnytime.com — it's a site for play-by-post gaming, built for purpose instead of hacked together from forum software. Minimal JS. No users yet and it's running out of Activate credits in February, so... we'll see, I guess.
http://www.Earsmith.com is a "completed" (but unpublicized and probably only used by me) project I'm proud of — it's for training your pitch sense.
(Edit to fix Earsmith URL.)