The best replacement for crashplan is carbonite.

The best alternatives to crashplan are rated as following:
★★★★★  carbonite
★★★★★  backblaze
★★★★  mozy
★★★  time machine
★★★  dropbox
★★  backblaze mac
★  amazon glacier
★  sugarsync
★  bitcasa
★  spideroak
★  justcloud
  idrive
  zipcloud
  just cloud
  sos
  sos online backup
  mypcbackup
  glacier
  livedrive
  amazon s3
  bittorrent sync

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

Other search terms related to crashplan and their ratings are:
★★★★★ synology
★★★★ qnap
★★★ freenas
You have in mind a companion for crashplan and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of crashplan in all years. Click on graph for more.
crashplan
carbonite
backblaze