Google Reader was Google’s RSS and Atom feed aggregator, with support for OPML import.
It had passable support for mobile devices (it even worked on the Wii, and the
usual Google KISS
design, Ajaxy bits and decent usability
(including vim
keybindings for the geek crowd).
Sadly, it did not support any kind of automated filtering (or classification) whatsoever, and was killed by Google in 2013.