The best replacement for webmin is cpanel.

The best alternatives to webmin are rated as following:
★★★★★  cpanel
★★★★★  virtualmin
★★★★★  ispconfig
★★★★  kloxo
★★★  plesk
★★  phpmyadmin
★★  ebox
★★  usermin
★★  ajenti
★  zentyal
★  openpanel
★  directadmin
★  lxadmin
  zpanel
  froxlor
  whm
  openmediavault

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

Other search terms related to webmin and their ratings are:
★★★★★ virtualmin
★★★ samba
bacula
You have in mind a companion for webmin and it is not yet here? Propose!



Google Trends

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