Twhirl was actually recommend by Kevin on my Top 8 Twitter Application Post, and it is actually far better compare to Twitteroo which could be found on Twitter official download page. Twhirl would actually kicks Twitteroo 5 blocks down the road in terms of the features and compatibility. It is compatible with Windows and Mac. This is because it is running on Adobe AIR, which could run application across-operating system.
What I like about it is that I could shortern url and add pictures easily. Plus a reply feature which is missing from Twitteroo. Running multiple account is also great if you have Twitter Group/Another Twitter account to control.
This are the listed features on their web.
- runs on both Windows (2000/XP/Vista) and Mac OSX
- connects to multiple Twitter accounts
- notifications on new tweets
- shorten long URLs (using snurl or is.gd)
- cross-post updates to Pownce and Jaiku
- post images to TwitPic
- search tweets (using TweetScan or terraminds)
- timeline filtering
- localized to English, German, Italian and Spanish
- color schemes
- automatically check for new versions
