The best replacement for oovoo is skype.

The best alternatives to oovoo are rated as following:
★★★★★  skype
★★★★  tango
★★  skype quality
★  skype which is better
★  facetime
★  fring
★  vsee
★  google hangout
★  sightspeed
★  tokbox
  skype better
  paltalk

Your alternative for oovoo is not listed? Suggest!
Speaking about oovoo, one probably shouldn't forget about ps3 eye.

Other search terms related to oovoo and their ratings are:
★★★★★ ps3 eye
You have in mind a companion for oovoo and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of oovoo in all years. Click on graph for more.
oovoo
skype
tango