Twitter Digest http://web2express.org/fred/ Web2express Digest is a free website providing a quick view of hot topics and top twitter users in real time. It applies semantic and NLP tools (like open calais and openNLP) to analyze tweets continuously received from Twitter Streaming API. On the Twitter Digest web site, visitors can clearly see what are being talked about on Twitter at the moment. For each daily hot topic, view the top contributing twitter users. For each twitter user, see a list of current topics. If you like what the user is saying, add the user to your following list.
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The Archivist: Save and Export Twitter Searches Before They http://flotzam.com/archivist/ The Archivist is a Windows application that runs on your local system and allows you to archive tweets for later data-mining and analysis for a given search.
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TwitterAnalyzer http://twitteranalyzer.com/ is one of the most extensive Twitter applications ever... basically, its a tool for Twitter users to analyze themselves or their friends, but Twitter Analyzer takes the statistics data to a much higher level... (it is called by some Twitter users the "Google Analytics for Twitter users") and rightly so, TwitterAnalyzer features more then 50 statistics measures displayed in 3D graphs and World Maps enabling surgical precision tuning of your twitter stream... you would discover many things about your or your friends Twitter presence... you can even share your statistics with your friends.
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Twitter Top Twenty http://twittertoptwenty.com/ is a top 20 list of everything on twitter including stats, users, and trends.
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Twitter Join date http://www.whendidyoujointwitter.com/ enter a twitter username and it will tell you when that account was created - cant be much simpler
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Tweet Buzzer http://tweetbuzzer.com/ lets you track the brand buzz on Twitter. You can see the top tweeted brands in a 24 hour, 7-day, or 30-day period. You can also track your favorite brand, see the percentage change over time in tweets and impressions, and submit a brand to be tracked.
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Klout http://klout.net/ Discover how influential you are on Twitter. See who influences your friends and measure the impact of your content.
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Who Has More Followers http://www.whohasmorefollowers.com/ Enter 2 twitter usernames and compare how many followers they have
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