Twapper Keeper is a simple but useful Twitter app that can archive your tweets based on the hash tags. Once you set up a query, Twapper Keeper will periodically scan Twitter for that tag and then archive the tweets it finds on its own servers. Tweets are scanned approximately every 5 minutes but that can vary based on the velocity of the incoming tweets. Once archived, you can then organize the tweets into categories of your choosing which show up on the right-hand side of the archived page.

• http://twapperkeeper.com/