The best replacement for skype is vonage.

The best alternatives to skype are rated as following:
★★★★★  vonage
★★★  yahoo messenger
★★  google talk
★★  oovoo
★★  teamspeak
★★  sightspeed
★★  facetime
★★  google voice
★★  icq
★★  скайп
★★  jumpertel
★★  vzochat
★★  tokbox
★★  ekiga
★  tango
★  magic jack
★  yahoo
★  msn
★  ichat
★  viber
★  lync
★  hangouts
★  google hangout
★  magicjack
★  voip
★  skype wifi
★  webex
★  gizmo
★  messenger
  gotomeeting
  whatsapp
  mumble
  line
  google
  phone interview
  skype mobile
  skype business
  ooma
  google hangouts
  raidcall
  in person interview
  gizmo5
  vent
  logitech vid
  google chat
  windows live messenger
  net2phone
  tango for android
  sip
  fring
  oovoo which is better
  aim
  yahoo messenger video

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

Other search terms related to skype and their ratings are:
★★★★★ video
★★ microsoft account
★★ facebook
★★ ipod touch
★★ chromebook
★ bluetooth
★ microsoft
★ skype
★ facetime
★ multiple people
★ kinect
★ front camera
★ psp
★ ichat
★ kindle fire
asterisk
cam
microphone
bluetooth headset
using microsoft account
blackberry
upnp
outlook
phone number
itouch
You have in mind a companion for skype and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of skype in all years. Click on graph for more.
skype
vonage
yahoo messenger