The best replacement for couchpotato is sickbeard.

The best alternatives to couchpotato are rated as following:
★★★★★  sickbeard
★★★★  couchpotatoserver
★★★  flexget
★★  movie grabber

Your alternative for couchpotato is not listed? Suggest!
Speaking about couchpotato, one probably shouldn't forget about nzb.su.

Other search terms related to couchpotato and their ratings are:
★★★★★ nzb.su
★ utorrent
You have in mind a companion for couchpotato and it is not yet here? Propose!



Google Trends

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couchpotato
sickbeard
couchpotatoserver