Blog Platforms

Apache Roller
Bblog
Blosxom
Dotclear
Drupal
Elgg
Geeklog
Livejournal
LifeType
Nucleus CMS
Pivotlog
Slash
Subtext
Textpattern
WordPress

Rss Feed Validators

Feed Validator
RSS Validator
W3C Validator
Redland RSS 1.0 Validator
RSS 1.0 Validator

Browser Rss Readers

Active Web Reader
AmphetaDesk
BlogBot
Bloglines
BlogMatrix Jager
ByteScout
Browsercraft Companion
FastBuzz News
NewsApp
Newsgator
News Is Free
News Spotter
RocketInfo

Windows Rss Destop Readers

BlogExpress
FeedDemon
FeedReader
NewsGator
NewsWatcher
Novobot
Omea
Radio UserLand
Rss Bandit
RSS Captor Pro
Rss Reader
SharpReader

Linux Unix Rss Destop Readers

AgileRss
aKregator
Feed on Feeds
Feed Reader Professional
Getrss
Infinite Penguins Rss Viewer
Jrssfeedreader
K.R.S.S.
Liferea
Lylina
Metaplanet
My Newspaper 
NewsGoblin PHP Rss News Aggregator
Plagger
Rss2email
Straw