BroadVoice
VoIP provider offers full feature set with voice mail, caller ID, etc. Requires supplied broadband phone adapter.
Calltower, Inc.
US-based B2B VoIP provider offers enterprise class hosted VOIP PBX Systems.
Dialpad Communications, Inc.
Offers monthly billing and pre-paid PC-to-Phone VoIP services. Also supports broadband telephone adapter for use without PC.
Free World Dialup
Community network allowing calls to toll free numbers in the US, Japan, UK and Netherlands. Peer-peer calling to other members.
iConnectHere
Offers VoIP-based PC-to-Phone, Broadband Phone and Calling Card services.
MyVoipProvider
International VoIP call rate price comparison. Includes news, user reviews and consumer information.
Reach Out IT, Inc. Technology Outsource
VoIP telecom consultants serving Massachusetts, Rhode Island and Connecticut. Implements Linux-based open source Asterisk PBX systems.
SCS Telecom GmbH
German-based B2B VOIP provider offers services to local call-shop owners and calling card telcos.
Super Technologies, Inc
Offers flat-rate unlimited calling within USA & Canada. Uses analog telephone handsets via broadband telephone adapter.
Texas Instruments VoIP Solutions
B2B manufacturer of VoIP equipment including IP Phones, VoIP Gateways, High Density Gateways, voice-enabled Cable & DSL Modems.
VoipXchange
B2B VoIP exchange platform for carriers to buy/sell excess capacity on VoIP networks covering call termination in 250+ countries. No-fee membership required.