Plagger core modules are as follows (Temporary, not finalized):

• all .pm files outside Plugin/ directory
• Core Plugins
  • Aggregator::Simple
  • Aggregator::Xango
  • Subscription::Config
  • Subscription::OPML
  • Subscription::Bloglines
  • CustomFeed?::Simple
  • CustomFeed?::Debug
  • Filter::ResolveRelativeLink?
  • Filter::ImageInfo?
  • Filter::StripRSSAd
  • Filter::EntryFullText?
  • Filter::Base
  • Filter::FindEnclosures?
  • Filter::FetchEnclosure?
  • Filter::Rule
  • Filter::RewriteEnclosureURL
  • Filter::HEADEnclosureMetadata
  • Filter::BreakEntriesToFeeds?
  • Filter::CompositeFeed?
  • Filter::AtomLinkRelated?
  • Filter::TruePermalink?
  • SmartFeed?
  • SmartFeed?::All
  • Publish::OPML
  • Publish::Planet
  • Publish::Gmail
  • Publish::Debug
  • Publish::Feed
  • Notify::IRC