yorik

This plugin allows to place widgets on your sidebars, that fetch the contents of one or more RSS feeds, combine them by date if there is more than one, and display their contents in a twitter-like manner, that is, a list of texts, where links, @someone and #something are turned into links.
Use it typically to condense several twitter feeds into one, or to display any other feed that follows twitter syntax, such as identi.ca

Twitter List Widget

This plugin allows to place widgets on your sidebars, that fetch the contents of one or more RSS feeds, combine them by date if there is more than one …

zhenech

This widget aims to provide an easy integration of your StatusNet (identi.ca) 
timelines into your WordPress. 
It can also be used to display timelines for tags or groups. 
You can provide multiple sources (= links to your profiles at identi.ca or your 
own StatusNet installation), which will get fetched, merged (if you want 
it to do so, like when you are posting the same content to multiple StatusNet 
sites) and displayed in your sidebar (with #hashtag, !group and @people links).

StatusNet Widget

StatusNet Widget provides a widget to pull your status from StatusNet sites like identi.ca. Multiple sources are supported.

Twitter List Widget vs StatusNet Widget