TwitHunter
Nicolas Seriot has a proof-of-concept Twitter client out. It won’t beat Tweetie in form or function but it does have some interesting functionality in the way of rule-based scoring of tweets as a way of filtering tweets that aren’t very interesting.
While I don’t see it prudent to make TwitHunter a full-featured client, I would like to see a way of introducing a middle layer between my twitter feeds and my client of choice where TwitHunter’s functionality would be implemented.
A GitHub repository for TwitHunter is also available.