The best replacement for mambo is joomla.

The best alternatives to mambo are rated as following:
★★★★★  joomla
★★★★★  salsa
★★★  drupal
★  xoops
★  dotnetnuke
★  phpnuke
★  php nuke
  samba
  boppy
  postnuke
  houngan
  calypso
  typo3
  nuke
  cha cha
  plone
  merengue
  riu merengue
  salsa on 2

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

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



Google Trends

Scale is based on the average worldwide traffic of mambo in all years. Click on graph for more.
mambo
joomla
salsa