HEATKEYS

The fastest and easiest way to get a SIP account for free video calling over the Internet. Register your SIP address with any VoIP phone or use our free internet phone for secure calling.

Linphone, Free SIP VOIP client, open-source voip software for Linux, windows, mac, iphone, android. Free sip voip sdk.

Welcome to voip.about.com, your guide site to everything Voice Over IP, also called VoIP, IP Telephony or Internet Telephony. Learn how to make free or cheap local and international calls using your PC or phone. Stay updated on VoIP hows and whats, V...

The Award Winning Business Phone Service over the Internet. OnSIP business VoIP service is a hosted pbx system that allows you to streamline your business communications. There’s no phone company hassle, no phone system to buy or manage, no contracts

talk.maemo.org

UK Voip provider - Voipfone provides reliable and inexpensive VoIP telephone calls and advanced PBX switchboard services to anybody, anywhere in the world.

This is the VoIP SIP Broker service. SIPBroker is a free open peering service.

Internet Telephony

Principal operateur de VoIP utilisant le protocole SIP. Offres r?dentielle, business et call centers disponibles via un Compte SIP ou Trunk SIP multi-canaux.

Voxilla has been a trusted source for accurate, up-to-date information on the IP Communications industry since 2002. A dedicated staff of reporters and engineers produce feature articles and product reviews to keep industry watchers abreast of the p...