Multi-purpose Twitter application needed.

I am in need of a web-based Twitter Application which fetches tweets, with defined (By me) keywords. If an tweet has those keywords, the script pulls the tweets through a filter. The filter will check if there are no ,,forbidden'' words and ,,forbidden'' links, which I should be able to define myself too. If the tweet contains any of the forbidden words and/or links it will not be fetched from twitter. If it does not contain forbidden words, it will place the tweet on the homepage of my website. There is place for 10 - 20 tweets on the homepage. If another tweet is added, the first tweet will go into the ,,archive''. The archive is divided into categories. The tweet will be checked for words on which it can be automatically placed in the right category. Users can browse those categories and see the archived tweets. If an tweet is in the archive for 30 days, it will be deleted.