Historical PowerTrack for Twitter

Historical PowerTrack for Twitter gives you complete and comprehensive access to every publicly available Tweet dating back to the very first Tweet from March 21, 2006. Available exclusively from Gnip

SearchHash: Download hashtagged tweets as a spreadsheet to archive or analyse

SearchHash: want to save or analyse all the tweets which used a particular hashtag? Enter a hashtag below to get a list of all the tweets which referenced it, to download as a CSV spreadsheet or share with friends or colleagues - great for post-event analysis

Twitter launches new profiles with Facebook style cover photos

Twitter launches new profiles with Facebook style cover photos

TweetInsight

TweetInsight - Spot the main topics your Twitter contacts are talking about; Find about most tweeted #hashtags; Take a look at the URLs your Twitter contacts have shared