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Matt Tweet3 Packrati.us = Twitter + Delicious Twitter Tips - TwiTip TwitIQ Twlinks IRL Connect Top 21 Twitter Apps We’ve accumulated a list of the twenty most popular Twitter applications, based on monthly unique visitor data from Compete. Twitpic, an app that lets users share photos on Twitter, took the top spot with 1,236,828 unique visitors in January. Tweetdeck, which came in second with 285,864 monthly visits, is a Twitter app that streamlines notifications and tweets. Third place went to Digsby (with 233,472 monthly visitors), an application that centralizes e-mail, IM and social networking accounts into one desktop program. With 149,812 visits, the fourth most popular app, Twitterfeed, offers to automatically tweet posts published on a user’s blog using RSS. A Twitter user ranking site, Twitterholic, is the fifth most popular application, with 147,164 people visiting monthly. Interestingly, two of the top twenty apps – Digsby and Hellotxt, an application that allows users to update their status across social networks – are not exclusively focused on Twitter.

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