The best replacement for bbm is whatsapp.

The best alternatives to bbm are rated as following:
★★★★★  whatsapp
★★★★★  kik
★★★★  imessage
★★★  pin
★★★  hangouts
★★  viber
★★  bba
★★  telegram
★★  groupme
★★  bcom
★  google hangouts
★  google talk
★  mbb
★  pin message
  gtalk
  wechat
  yahoo messenger
  aim

Your alternative for bbm is not listed? Suggest!
Speaking about bbm, one probably shouldn't forget about blackberry id.

Other search terms related to bbm and their ratings are:
★★★★★ blackberry id
★★★★ bluestack
★★ unlocked blackberry
★ other phones
playbook
blackberry service
vodafone
You have in mind a companion for bbm and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of bbm in all years. Click on graph for more.
bbm
whatsapp
kik