Autopostr
- automatically posts Flickr photos to Twitter
MadTwitter
- a windows desktop client inspired by Twitterific
RSS2Twitter
- takes any RSS feed and posts the items to Twitter
Summize
- real time Twitter search engine that allows for keyword searches of tweets
TweetScan
- real-time Twitter search engine that lets you track keywords and sign up for email alerts
Twhirl
- a desktop client built on Adobe AIR that allows sign in to multiple Twitter and Friend feed accounts
TwitDir
- directory of twitter users
Twitstat
- a mobile twitter client that lets you post updates and view replies and that 10 latest tweets from friends.
TwitterFox
- a firefox plug-in that alerts you to friends' updates, formerly known as TwitterNotifier
Twitterholic
- a list of the top 100 Twitter users based on their number of followers
TwitterLocal
- will generate a RSS feed of tweets from a particular geographic area
TwitterMail
- sends your friends' tweets to your email inbox
Twitterrific
- a Mac OS X desktop client for using Twitter
TwitterSnooze
- temporarily unsubscribes you to a Twitter member who may be at a conference or event
Twitt(url)y
- aggregates all of the URLs that Twitterers are talking about and displays how many tweets each one received
Who Should I Follow?
- makes recommendations of people to follow based on your existing subscriptions
Twitter Mashups from the Programmable Web
All Twitter tools and mashups in one place
