The best replacement for cpanel is plesk.

The best alternatives to cpanel are rated as following:
★★★★★  plesk
★★★  webmin
★★★  directadmin
★★★  vdeck
★★  whm
★★  ispconfig
★★  parallels plesk
★  cpanel
★  ensim
★  cloud hosting
★  plesk 11
★  ispmanager
  h-sphere
  virtualmin
  hsphere
  helm
  interworx
  parallels
  plesk 10
  plesk panel
  spanel

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

Other search terms related to cpanel and their ratings are:
★★★★★ whm
★★★★ godaddy
★★★ fantastico
★★ softaculous
★★ wordpress
★★ aws
★ whmcs
★ centos
★ litespeed
hosting
fantastico hosting
You have in mind a companion for cpanel and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of cpanel in all years. Click on graph for more.
cpanel
plesk
webmin