140kit – Free Open Source Twitter Analytics Platform
http://140kit.com/

Come to this site with a search term in mind (like “Justin Bieber”, “#IranElection”, or “@aplusk”), and choose a time frame of up to a week for collecting Tweets that include your term. You can also collect tweets from specific users by passing us a list of comma-separated names (like “aplusk,dgaff,140kit,shitmydadsays,cnnbrk”) and they will collect all of their tweets since the day they created their account. Also, if you just want to dabble quickly, you can curate collections by stringing together multiple existing data sets (like all the data sets that searched the term “lol”), and view the analysis conducted as a result of this curation. They use their cluster of machines to collect your data using their access to the Twitter API. If you search for tweets with a term, they employ the streaming API to collect data in a distributed fashion. When your data collection is finished, depending on your access level, they conduct an array of analytics on the data set, ranging from the ordinary dump of data in MySQL/CSV to Network graph visualizations, gender breakdowns, and more. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog. This has been added to Business Intelligence Resources Subject Tracer™ Information Blog. This will be added to Web Data Extractors white paper.