SuiteTwo Open Source Version

I think i saw this SuiteTwo some time ago, the first thing pop in my mind is which open source script will i throw in to make it similar features.

these are include in SuiteTwo

• MovableType - for blog
• SocialText - for wiki
• newsgator - for feed reader
• simplefeed - for rss publishing

if using open source to replace

• Wordpress - for blog , people say that this is how wordpress strike back - KnowNow Wordpress Enterprise Edition
• Mediawiki or Dokuwiki - for wiki
• gregarius - for feed reader
• ?

nothing really pop in my mind for rss publishing .. hhhmmm , what will you using ?