PROS: Very simple to use, Notifies you of contacts who are on Viber, Decent call quality, Send photos and videos, Stickers and emoticons to liven up chats, Group messaging with up-to 100 people, Hold & Talk feature
CONS: You may have to convince friends to switch to Viber
PROS: Supports video chats, texting and instant messaging, High quality video chats, Automatically imports contacts from Microsoft accounts, Lots of emoticons, Free group video calls and screen sharing
CONS: Interface looks a bit sparse, Contacts may need editing after importing
PROS: Similar functions and capabilities when compared to larger providers such as Skype., Competitive international calling rates.
CONS: The calling rates are not guaranteed and they will fluctuate from time to time. , As this is a less powerful software platform you may experience reduced signal strength and lagging call times on occasion.
PROS: Easy to use, No installation required, Sharp videoconferencing mode, Lots of features to improve your chat experience, Great sound quality in voice calls, Support for embedded local video on target video