B2B manufacturer of VoIP equipment including IP Phones, VoIP Gateways, High Density Gateways, voice-enabled Cable & DSL Modems.

Peer to peer internet voice service. Mac, Windows and Linux versions available. Users may call landlines and cellphones for a fee; users may call each other for free.

Provides voice over internet local dial-tone service. No PC required. Uses analog telephone with broadband telephone adapter.

Instustry trade news publisher featuring VoIP news, VoIP forum (including termination routes), call center news, CRM, telecommunications news, and self-produced VoIP tradeshows.

Offers monthly billing and pre-paid PC-to-Phone VoIP services. Also supports broadband telephone adapter for use without PC.

An open source telephony switching and private branch exchange service. Allows peer-peer calling using a variety of voice over internet protocols.

News, forums, reviews and guides for IP telephony devices and services.

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

Voice over internet direct dial service without a PC. Owned by 8X8, Inc.

Provides voice over internet dial-tone service. No PC required. Uses analog telephone with broadband telephone adapter.

Web-activated VOIP calls between two landline or mobile phones. Paid service to connect to non-registered users, free between 2 registered users.

Windows platform software-based IP PBX systems for small businesses. London/Cypress-based company.

News, reviews and forum discussion about Vonage VoIP service.

Offering prepaid and subscription services as well as IP telephony hardware for use with Asterisk and SIP providers.

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

Business VoIP provider serving Tampa Bay, FL area.

Offers VoIP-based PC-to-Phone, Broadband Phone and Calling Card services.

US-based B2B VoIP provider offers enterprise class hosted VOIP PBX Systems.

PC-to-Phone service for outbound calls only. Software download required.

Offers VoIP services to small business, enterprise solutions such as call centers and services for carriers.