Tweetscan – Sends you email updates when your keywords are mentioned on Twitter, identi.ca, and other Laconica-based sites.

appTracks: Web
appTags: identi.ca, keywords, laconica, updates

twitterfeed – Feed your blog to twitter, identi.ca, HelloTxt, or Ping.fm.

appTracks: Web
appTags: feed, HelloTxt, identi.ca, Ping.fm

Twhirl – A social software desktop client app, based on the Adobe AIR platform, for Twitter, Friendfeed, identi.ca, or seesmic.

appTracks: Desktop
appTags: adobe air, friendfeed, identi.ca, seesmic