The best replacement for rss is atom.

The best alternatives to rss are rated as following:
★★★★★  atom
★★★  atom feed
★★★  twitter
★★  xml
★  rms
★  podcast
★  vsz
★  atom feeds
★  api
★  feedburner
  rsu
  feed
  newsletter
  pss
  rdf

Your alternative for rss is not listed? Suggest!
Speaking about rss, one probably shouldn't forget about transmission.

Other search terms related to rss and their ratings are:
★★★★★ transmission
★★★★ images wordpress
★★★ rss
★ google reader
reader
You have in mind a companion for rss and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of rss in all years. Click on graph for more.
rss
atom
atom feed