Web Directory by Internet-Web-Directory.com

Converged voice and data service using VoIP with adapter to enterprise and business customers.

Peer-peer calling service. Requires SIP adaptor and phone.

Peer to peer internet voice service. Requires PC for both callers.

Offers flat-rate unlimited calling within USA & Canada. Uses analog telephone handsets via broadband telephone adapter.

Canadian based provider of PC-to-phone and IP phone services and hardware.

VoIP wholesale international termination services provider.

Free VoIP resources, including online bandwidth calculators, white papers, books, a directory and a forum.

VoIP service offering free and paid plans. Some plans require phone adapter or USB phone with an Internet-connected computer.

VoIP service offering phone-to-phone with device. Various features and calling plans.

Information exchange for VoIP partners offering minutes termination and origination, as well as hardware and software trade.