Twitdom is not only a database of applications, but can extend all the analytics on the site to come up with popularity rankings.

Top 25 Apps by User Rankings

• 1. NutshellMail – 4.92/5 (13 votes)
• 2. ffwd – 4.92/5 (12 votes)
• 3. FileTwt – 4.91/5 (11 votes)
• 4. IRLConnect – 4.88/5 (16 votes)
• 5. MicroPlaza – 4.88/5 (8 votes)
• 6. Twittley – 4.88/5 (8 votes)
• 7. TipTop – 4.88/5 (8 votes)
• 8. DestroyTwitter – 4.86/5 (7 votes)
• 9. TwittLink – 4.86/5 (7 votes)
• 10. Wordola – 4.86/5 (7 votes)
• 11. SumtnSumtn – 4.86/5 (7 votes)
• 12. Twit – 4.84/5 (25 votes)
• 13. PeraperaPrv – 4.83/5 (23 votes)
• 14. HootSuite – 4.83/5 (6 votes)
• 15. Refollow – 4.83/5 (6 votes)
• 16. Twaitter – 4.83/5 (6 votes)
• 17. Twrivia – 4.8/5 (5 votes)
• 18. Clicktotweet – 4.8/5 (5 votes)
• 19. TweetPortal – 4.8/5 (5 votes)
• 20. TwitterBackgrounds – 4.79/5 (28 votes)
• 21. Instant Tweets – 4.78/5 (9 votes)
• 22. TweetDeck – 4.75/5 (8 votes)
• 23. Nearby Tweets – 4.75/5 (8 votes)
• 24. MoochFly – 4.71/5 (7 votes)
• 25. SXSW Lesson – 4.71/5 (7 votes)

Top 25 Apps by Page Views

• TweetWheel – 4,685 views
• Tweeter Mobile – 3,749 views
• Twittix – 3,052 views
• HTC Peep – 3,030 views
• Twitter Analyzer – 2,920 views
• The Twitter Tag Project – 2,875 views
• Twitter Backgrounds Gallery – 2,760 views
• ÜberTwitter – 2,602 views
• Hummingbird – 2,464 views
• Twit Robot – 1,976 views
• Tweeter – 1,963 views
• Tweeter (Facebook) – 1,935 views
• PavoMe – 1,853 views
• Twits Like Me – 1,772 views
• Twitter Trends – 1,734 views
• MoTwit – 1,711 views
• Twitter Patterns – 1,706 views
• Twitter Follower – 1,665 views
• Follow Friday! – 1,657 views
• twibble – 1,629 views
• Twitter Karma – 1,628 views
• pocketwit – 1,593 views
• DestroyTwitter – 1,571 views
• Twitter Grader – 1,480 views
• Tweet Rank – 1,454 views