  |
http://skype.com - http://skype.com
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. |
  |
Asterisk - http://asterisk.org
An open source telephony switching and private branch exchange service. Allows peer-peer calling using a variety of voice over internet protocols. |
  |
JAJAH Inc. - http://www.jajah.com/
Web-activated VOIP calls between two landline or mobile phones. Paid service to connect to non-registered users, free between 2 registered users. |
  |
TMCNet on the web - http://www.tmcnet.com
Instustry trade news publisher featuring VoIP news, VoIP forum (including termination routes), call center news, CRM, telecommunications news, and self-produced VoIP tradeshows. |
  |
http://www.vonage.com/ - http://www.vonage.com/
Provides voice over internet local dial-tone service. No PC required. Uses analog telephone with broadband telephone adapter. |
  |
VoicePulse - http://www.voicepulse.com/
VoIP service offering phone-to-phone with device. Various features and calling plans. |
  |
OneAccess Networks - http://www.oneaccess-net.com/
Broadband access solutions including IP routers, voice over IP (VoIP) and voice over DSL (VoDSL) solutions, concentrators and networks adapters. |
  |
Callserve - http://www.callserve.com/
PC-to-Phone service for outbound calls only. Software download required. |
  |
Broadvox - http://www.broadvox.net/
Offers VoIP services to small business, enterprise solutions such as call centers and services for carriers. |
  |
PrettyMay - http://www.prettymay.net
Skype call recording software for Windows, call center solutions, and PBX software. |
  |
Junction Networks - http://www.junctionnetworks.com
Provides hosted and gateway services, with weblog. Based in New York and Pennsylvania, USA. |
  |
http://www.pc2call.com/ - http://www.pc2call.com/
PC-phone internet voice service provider based in the United Kingdom. |
  |
InPhonex - http://www.inphonex.com
VoIP service provider offers residential and business IP telephony phone service. |
  |
Voice over IP Calculator - http://www.voip-calculator.com/
Free VoIP resources, including online bandwidth calculators, white papers, books, a directory and a forum. |
  |
http://www.ipgrade.com - http://www.ipgrade.com
B2B Wholesaler of VoIP-based Phone-to-Phone, PC-to-Phone, DDI, VPN, CRM, prepaid calling cards, and broadband services. |
  |
BroadVoice - http://www.broadvoice.com/
VoIP provider offers full feature set with voice mail, caller ID, etc. Requires supplied broadband phone adapter. |
  |
Callcentric - http://www.callcentric.com
Worldwide VoIP provider for business and residential customers. Free accounts and in-network calling. Per minute and unlimited rate plans. Phone numbers in US, Canada, and internationally. |
  |
Localphone Ltd. - http://www.localphone.com/
VoIP provider offering various consumer and B2B telephony services. |
  |
Telovations - http://www.telovations.com
Business VoIP provider serving Tampa Bay, FL area. |
  |
VoIPVoIP - http://www.voipvoip.com
Pre-paid VoIP services and calling cards. No monthly fee with in-network restricted incoming calls. Real DID number for monthly fee. |
  |
Calltower, Inc. - http://www.calltower.com
US-based B2B VoIP provider offers enterprise class hosted VOIP PBX Systems. |
  |
http://www.voxby.com - http://www.voxby.com
Voxby offers IP Phone Services and Wireless VoIP and a variety of other services. |
  |
VocalNet - http://www.vocal-net.net/
VoIP provider offering residential and business plans. |
  |
Smoothstone - http://www.smoothstone.com
Communications provider for medium-sized enterprises. Provides centrally managed, solutions, including VoIP, over a private, nationwide network. |
  |
Super Technologies, Inc - http://www.virtualphoneline.com
Offers flat-rate unlimited calling within the USA and Canada. Uses analog telephone handsets via broadband telephone adapter. |
  |
CallDaddy - http://www.calldaddy.com
Pre-paid VOIP services. H.323 IP phone, gateway, gatekeeper, NetMeeting or any other H.323 compliant terminal necessary. |
  |
Hypecall - http://www.hypecall.net
Callback service utilizing SkypeOut account. Send message or vCard via SMS and receive callback connecting both parties using Skype network and pricing. No software needed, any phone with sms capabilities. |
  |
WERCS Communications - http://www.wercscomm.com
US-based B2B VoIP telephony provider offering converged ip voice and data network services to customers in Wyoming and Rocky Mountain region. |
  |
World On IP - http://www.worldonip.com/voipwirelessphone.htm
Italy-based B2B VoIP provider offering hardware to set-up wireless VoIP networks. |
  |
PhoneBoost - http://www.phoneboost.com
VoIP and IP-based telephony service with switchboard, call routing, pbx-style features for businesses with single or multiple locations. |
  |
Hihicall - http://www.hihicall.net
Pre-paid PC-to-phone VoIP service worldwide; download software required |
  |
My VoIP Store - http://www.myvoipstore.com.au
Australian-based (Brisbane) VoIP consultant and B2C e-commerce site for VoIP hardware. |
  |
SageVone - http://www.sagevone.com
Business, residential VoIP calling plans include feature bundles and PBX functionality such as call transfer, automated attendant, call center queuing, conferencing, etc. |
  |
Voipia Networks, Inc. - http://www.voipia.net
Business and Residential VoIP programs; software solutions for Call Centers. |
  |
Talafone - http://www.talafone.com
Canadian based provider of PC-to-phone and IP phone services and hardware. |
  |
Vanguard Networks Pte Ltd - http://www.vanguardnetworks.com.sg/
Singapore provider of VoIP services including video conferencing, international connectivity, bandwidth management and electronic whiteboard. |
  |
Pulse TeleSystems - http://www.pulseindia.net
Offers VoIP services: phone-to-phone, device-to-phone and PC-to-phone in India, Canada, France, Germany, Malaysia, Nepal, Srilanka and UK. |
  |
IPCB.net - http://www.ipcb.net
Softswitch services such as routing, billing as well as VoIP call termination. |
  |
EW Communications - http://www.ewcoms.com
UK-based B2B and B2C VoIP telecom provider. |
 |
People Line Communications - http://www.peopleline.net/pstelco/index.htm
Vancouver, Canada based VoIP provider. Includes rate plans, description of technology, and FAQ. |