List of free VoIP networks available

Whats a Free VoIP Network?

Free VoIP Networks are based on the SIP.EDU project, which means:

It’s a 100% SIP compliant network that allows you to connect with SIP softphones/IP phones/WiFi Phones…
It’s a network where you don’t pay to register and get a SIP URI.
Allows you to freely dial people inside your domain.
Allows you to freely dial people from other Free VoIP Networks.
Allows you to freely receive calls from other Free VoIP Networks.

VoipGate – IAX2, SIP, Enum, various option……
OnSIP – Free SIP to SIP calls, free extension to extension dialing. Unlimited free users and extensions. Loads of free features including time based routing. Built on open standards means OnSIP works with any SIP compliant phones and networks. WebRTC and SIP over WebSocket support.
Free SIP providers – Free SIP providers. Review of free sip services.
FreelyCall provides free internet voice and video calls, in addition to low rate local and international calls to regular telephones and mobiles
Sipmobile Free calls to USA and Canada. Free US number. Free audio and video calls between Sipmobile users, free calls to Sipbroker networks. Instant Messaging. PSTN access numbers. Cheap international calls to regular telephones and mobiles. ENUM lookups. WebRTC support. Free WebRTC client Webphone.

Skype – doesn’t allow SIP dialing, no ENUM lookups
Tpad.com – The Global VoIP Network – SIP, Free Global SIP Number, SIP URI Forwarding, no ENUM lookups.
Cebod Telecom VoIP provider for business and Call Centers
Free VOIP Network