You can use it with status.net (like identi.ca) and with twitter.
It has many features like attachments, bookmarks, filters and geolocation.
You can add multiple accounts also with merged timeline.
Visit http://mustard.macno.org to get more informations!
It's an open source project.
Fixed a bug in conversation view
Upgraded to Twitter API 1.1
On statusnet instances Mustard handles correctly max attachment size.
Fixed a bug on account settings, now Mustard does not crash when exiting Account Settings
Content rating: Low Maturity
Market link: org.mustard.android
Web site: http://mustard.macno.org
Market downloads: 10,000-50,000
Market rating: 4.3 / 5.0