KeepCalling vs Zoiper
A side-by-side look at KeepCalling and Zoiper. For an in-depth review of either product, follow the links below.
KeepCalling
Online Services
KeepCalling is a VoIP phone service provider that offers unlimited calling to the US, Canada, Mexico, China, India and other countries. It provides virtual phone numbers and works on desktop and mobile devices.
voipphonecallingunlimitedvirtual-phone-number
Zoiper
Social & Communications
Zoiper is a softphone application for making VoIP calls over the internet. It supports popular protocols like SIP, IAX, and H.323. Zoiper provides high quality audio/video calls, instant messaging, presence management and other communication features.
softphonevoipsipiaxh323audio-callsvideo-callsinstant-messagingpresence-management
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