• VOIP Service Providers Residential - for retail level products
• VOIP Service Providers Business - multiline small business products and PBX systems
• VOIP Service Providers B2B - whoesale and bulk products, products for resale
• VOIP Service Providers T.38 - VOIP providers offering T.38 fax service (very few exist)
• RIP VOIP VOIP provider cemetery

Peer to Peer Service

• Amphone-africa - Free P2P phone, calling cards with competitive rates
• Cliconnect - Canada - Brazil
• Damaka - Skype-like application based on SIP
• DingoTel - Free P2P Phone Calls, regular PSTN phone calls, push to talk for walkie talkies.
• Encounta, VoIP brandband provider for virtual operators : Ova-IP microgateway with internal LCR and prepaid features for global calling
• Free World Dialup, aka FWD
• Gizmo Project, via SIPphone.com
• HotTelephone.com has relaunched its FREE PC2Phone and Phone2PC service on the Asterisk Platform
• iCall offers free outbound long distance, free incoming calls and peer to peer calling.
• http://www.iptalk.co.il - P2P VOIP
• IPvaani enables phones to communicate over your existing broadband internet connection to make and receive phone calls for FREE.
• IPBusinessFree P2P Phone Calls and pstn calls service, the best prices of call to Peru
• Nadiz Free SIP service, Free Long Distance Calls!
• PeerCall - A hardware phone with peer-to-peer service
• PeerioBiz - serverless peer-to-peer package for small-medium size business => version 1.1 Beta is a current release
• Phoneopia FREE p2p Calls and pstn calls service
• PhoneGnome - Free P2P SIP calls. Web-based, PC-based, and hardware (BYOD or custom box). Cheap VoIP-PSTN calls.
• RAKETU Free, NO SUPERNODES,dialup/broadband, softphone, bridge to Skype,any IM, SMS, ftp, search, travel, news/weather/stock, media player,picture viewer, true p2p technology, RakOut/DialOut calling.
• P2P VoIP Services - P2P VoIP with cutting edge solutions.
• Skype now owned by E-bay, one of the best known and largest p2p VOIP services
• Talkfly - ABSOLUTELY FREE Peer-to-peer SIP calls vis softphones or SIP hardware. Local DIDs also available to over 7000 ratecenters. Asterisk Supported.
• VOIP Service provider reviews - Reviews of uk voip service providers.

Phone Cards

• Kovino: Become a reseller and print calling cards online. Kovino calling cards can be used with Regular phones, IP phones, SIP and IAX softphones. Our calling cards can be used for Webcalls & Callbacks as well (very useful service when you are on the move travelling, business trips etc).
• IsraelNumber.com: Israel multi channel access numbers for Phone cards operators, IP forwarding, flexibale expension to your need, cheap per channel pricing, unlimited incoming.
• Cheap International Phonecards: Cheap International and domestic calling Cards.
• Phone Cards Pc&cc - phone cards & calling cards, international calls, sms calls, web calls, conference calls and many others.
• prepaid phone cards Make cheap phone calls using prepaid phone cards. Pinless phone cards. Overseas calling cards. Pinless dialling - skip entering PIN.
• Phone Cards Prepaid phone cards.
• Molten Telecom, Inc Prepaid phone cards. Domestic and international cards available.
• DigitalTone.net - Prepaid Phone Cards Offers prepaid phone cards, VOPI for domestic and international long distance to places in North America, Asia, Africa, and Australia. New cheap rates are available.
• Talkloop.com Offers prepaid International Calling cards and Phone cards with excellent quality and customer service.
• Middle East Calling Cards International prepaid calling cards to call any phone in the Arab world and Middle East.
• PhoneShark.com Prepaid Phone Cards And Prepaid Wireless Cards
• AirTouch - Prepaid Phone Card Solution Provides wholesale phone card solutions to Singapore, East Asia, South Asia and the Middle East.
• Phone cards online smart calling card, international phone card, pinless calling card - the lowest rates for calling to hundreds of destinations.
• Glocall - Universal Phone Card Offers a prepaid phone card with International Callback, VOIP PC-Phone as well as toll free and local access from South Africa, Middle East, UK and North America using a single PIN.Callback and Voip services available worldwide.
• KeepCalling.com Phone cards that work from North America. We use VOIP for routes where quality is good and PSTN to countries with weak Internet infrastructure. In the near future we will be providiing SIP based VOIP services.
• IPTalk International prepaid cards. PC to phone and ATA.
• Phone Cards Prepaid phone cards and international phone cards online.
• To call from Arab countries Amanees international prepaid calling cards are sold in the Middle East and Arab Countries shops and on line.
• http://www.orbitvoice.com Calling cards that work from Bahrain, good quality. Worth the price.
• Phone Cards Buy Phone cards and international calling cards online.
• Click4prepaid.com - Worldwide Prepaid Phone Cards that fund Click4netphone VOIP and Callback services.
• Diamondcard.us - Worldwide calling cards. Save 80%. Private label program.
• Kphonecard.com International prepaid phone cards. PC to phone cards.
• Calling Cards Reliance Calling Cards.
• Phonebestcard.com Big choice variety phone cards. Prepaid calling card | International calling card
• TalkLITE Calling Cards with 800 and International Access, Caller ID auth for pinless calling great rates.
• Tel Comm One No connect charge. 1.1cents USA, very competitive International rates. No gimicks/hidden charges. CallerID authentication available for pinless calling.
• Middle East Calling Cards International prepaid calling cards to call any phone in the Arab world and Middle East.
• Veratel Communications - 2.5 cents/minute VoIP-based Calling Card Provider. No connection fees, expiration date, or hidden fees. North American dialing available.
• CallingCardReview.com Calling cards review | Comparsion international prepaid calling cards
• Vtalk Calling Cards International prepaid PC to phone cards.Works well in China, Middle East areas which block VoIP traffic. Looking for reseller worldwide, Big discount! Private label program.
• MetroTel Phone Card and 800 hosting - set your own rates.
• Intracall Prepaid Calling Cards - PC2Phone, International Callback, GSM Callback, cooperating with resellers of prepaid calling cards - providing VoIP services since 2000 (Intrafon).
• chinamallonline.com Distributor of international phone cards.
• GloboTech Communications Worldwide Prepaid Phone Cards - USA & Canada at $0.005 - CallerID authentication available for pinless calling.
• Calling Cards Store we have a large variety of Calling Cards from more than 35 vendors. Find best rates, compare and rate calling cards.
• Phone Cards offers prepaid calling cards and phone cards online from the comfort of your Home 24 hours a day 7 days a week and make calls from anywhere, anytime.
• Calling Cards Phone Cards Online: Find the best rates from a variety of cards. Buy online, get a PIN by email and make a call from the comfort of your Home.
• Phone Cards Buy the Cheapest International Calling Cards and Prepaid Phone Cards Online. The Lowest International and Long Distance Rates.
• InSpire Phone competitive price with high quality sound.PC-2-Phone, Device-2-Phone,Calling Card Solution
• VOIPIT Calling Cards offers prepaid calling cards and phone cards online. Make calls from anywhere, anytime.
• Calling Cards - from Enjoy Prepaid. We offer the lowest rates, high quality sound and a large variety of calling card plans.
• www.unifycall.com - Provide IAX2 termination for VOIP beginners and individual end-users. No minimum usage.
• www.utalkprepaid.com - Great phone card rates to call anywhere around the world. No connection fees.
• Phone Cards - Best price for international long distance calls, fast service and great selection of cards.
• WholesaleSIP.net - Provides Tier 1 SIP/IAX termination for calling card companies at lower rates with no volume requirements.
• Phone Cards - Prepaid international phone cards for domestic and international long distance calls at discounted prices. Call with the best quality calling cards at the.
• Phone Cards--Cheap phone card for USA and international calling, we offer the best international and domestic calling cards with the lowest rates.International phone card.
• Calling Cards-- Buy Calling cards online.
• Calling Cards--Calling cards online: Find the optimal rates from a variety of phone cards. International and prepaid calling cards. Prepaid wireless recharge service for cell phones. We also provide next services: VoIP, PDA & Web Call, SMS call, Prepaid conference calls, SMS refill, PINless dialing, Personal toll free number, Speed dial features.
• Reliance Cards Phone Cards Online
• Phone Cards International Prepaid Phone Cards, used worldwide, low rates, quality sound. Perfect for calling your family, friends and business.
• PC to Phone Calling Cards Fone2Talk is the leading provider of PC to phone services and PC to phone calling cards used for making phone call from PC.
• PhoneWW WorldWilde Phone calls at cheap prices. Almost free Sip address and free message box.

Wi-fi GSM VoIP Providers

• VIPN - Voice Internet Phone Network GSM Wi-Fi Mobile phones with VoIP embeded.
• Radiant Resources, Inc.
• IP Gear Qualmax IncManufacturer of AES Encrypted VoIP gateway in 4,8,16 port analog and 1,2 T1/E1 for the SMB market. Full service VoIP provider (equipment, billing solutions and direct routes) including Termination Partnerships worldwide.
• IPsmarx Technology, Inc. GSM Solution Provider, GSM Hardware Provider, International Wholesale VoIP Provider, Turn-Key VoIP Solution Provider