TalkingPuffin is a powerful, open source, desktop Twitter client from Dave Briccetti (@dcbriccetti) and others. It’s written in Scala and runs on the Java platform. It includes a Twitter API library originally written by Mark McBride (@mccv) and further developed by Dave Briccetti.

• Support for new Twitter features
• Find people
• Twitter lists
• Create lists from tagged users
• View a list and follow all or some of its members
• View all lists owned by or containing selected people
• Report spam
• Retweet
• Decoding of latitude/longitude into readable locations (using user profile location and new geographic info from Twitter)
• Filtering and Organizing
• Select text in a tweet to use as a filter
• Tag users with one or more tags
• Sort by age, from or to
• Removal of “noise” and “decorations”
• Mute users, retweets from specific users, and applications (like Foursquare)
• Mute tweets to a user, or between two specific users
• Support for an external “noise tweets” repository
• Bypass FriendFeed, StumbleUpon, HootSuite and Digg frames and intermediate pages (blog post with video)
• Multiple accounts
• Support for Twitter-compatible services like identi.ca
• Multiple views of following or mentions
• Delete all selected tweets, or all tweets by authors of all selected tweets
• Highly-configurable display of tweets
• Undockable views
• Adjustable font size and table row size
• Easy display of large photos of twitterers
• Detailed view of followers and following, and how they overlap
• Following multiple links or users from a tweet with a single operation
• Shrink and expand URLs
• Search for users to twitter to or mention
• Keyboard operation: moving through the tweets, filtering, showing photos, following links and users
• Attach notes to users
• Override user names (some people don’t provide a useful name)