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 ?