HTML, CSS parser. Required helpers and parsing for mime types, urls, source sets, and many more. Provides extension points, which are then used by the other projects.
Currently in beta. Considered stable.
Currently in alpha stage. Leaving experimental stage soon.
IO modules and helpers, including - but not limited to - improved (and more) requesters, storage abilities, and caching mechanisms.
Currently in pre-alpha stage. Still in experimental stage.