TwitteReader

"TwitteReader is a web application that was designed in order to Twitter users be able to keep track of which messages they have already read and mark and unmark them."

Twitoria

Twitoria - finds your friends on Twitter that haven't tweeted in a long time so you can give them the boot. Great for finding out whose really using Twitter

Twimailer

Twimailer - A mailer application that gives you a wealth of information from the people that are interested in you on Twitter. Simply substitute your primary email address with the autogenerated Twimailer address and save yourself from the bland Twitter emails that take up your day

wwwitter

wwwitter is a tool that lets you take part in Twitter discussions about any webpage


wwwittering from Simon Madine on Vimeo.

Twithority

Tsavo Media, a company focused on the delivery and monetization of niche content to digital consumers, introduced Twithority, "Twitter Search by–Authority," a new search engine for the microblogging service Twitter. Twithority returns Twitter search results, looking back as many as 1,000 results. It sequences results by rank, with highest ranking users first, and time (with most recent tweets first), within the top 10,000 Twitter users. Tsavo will integrate Twithority into its Daymix network of consumer content sites. Twithority will serve as an informal metric for Tsavo's content sites, along the lines of Google's zeitgeist feature

TweetSum

TweetSum shows you at a glance who's following you, then gives you the tools you'll need to decide whether you should follow them back or not. You can also quickly add or dismiss new followers

CloudBerry TweetIE

CloudBerry Twitter plug-in for IE helps you to post excerpts from the websites you visit with a click of the button and attach a short URL to the source page