1. RcmapPlots anonymous edits on world map in real time, websocketly.
2. WikimonA WebSocket-oriented monitor for Wikipedia (also, wikimon, wikital monsters)
3. WeeklypediaA weekly email update of all the most popular wikipedia articles
4. TopThe daily list of Wikipedia's most-visited articles
6. cronfedConvert cron emails to RSS 2.0. It's the least you can do.
7. seealsoA collection of visualization projects built on Wikipedia data.