Comparison of Free VOIP Service Providers

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VOIP PROVIDERS | Comparison of Free VOIP Providers | Comparison of Paid VOIP Providers | Combining VOIP and Web-Conferecing |

Below is a list of free voip service providers (Voice Over the Internet Service Providers) that you can use for teaching English with on the internet. Although voip can be engineered to be 99.99% reliable (carrier grade quality), there are still many issues to be considered. This means that before you start using or recommending any of these free voip service providers to tutor EFL/ESL online, make sure that you spend time trying them out. Try and compare several different voip service providers and make several test calls with each.

If you know of any good voip service providers that you can recommend, please contact us and let us know. See also the section on Web Conference Software reviews for screen-sharing applications.

SERVICE PROVIDER & RATING (Out of 5) RATING	OTHER FEATURES	VOICEMAIL	VIDEO	CONFERENCE CALL	ORGIN	COMMENTS
Babble (3/5)	* SIP protocol * Free calls to other networks					Babble is simple to set up as it is to use. Monthly subscripbers get 1000 minutes, and can make calls to major cities around the world for free.
Gizmo Project (3.5/5)	* SIP protocol * Free calls to other networks			(10 users)		Gizmo offers excellent voice quality and a highly intuitive dailpad. Features includes the ability to call over 100 other network, call recording, free conference calling and much more. Check it out now!
Yahoo Messenger (1.5/5)	* Proprietary protocol					Yahoo Messenger has recently added a free voice and audio recording feature. And for a very small fee you can make PSTN calls.
Skype (3/5)	* Proprietary protocol			(5 Users)		With 24 different language translations and over 12 million downloads, Skype is the ideal software for online tutors.
Firefly (4/5)	* IAX protocol * Free Calls to other networks					Firefly is a highly reliable VOIP provider. It uses an enhanced IAX protocol, but also supports SIP and standard IAX protocol. Available for Windows users only.
PeerMe (3.5/5)	* Proprietary protocol * Voice Tag for your website or email					The simplicity and reliability of PeerMe is what makes it a great program (voice calls and text chat only). A voice tag feature can be added so that anyone surfing your website or reading your email can communicate with you instantaneously. Available for Windows users only.
CallCentric (5/5)	* SIP protocol * Free calls to other networks * Real phone number			(4 Users)		CallCentric is a reliable and high quality VOIP provider with good flexible call plans. Using the conference feature, voicemail and a real phone number is an added cost.

Next: Comparison of Paid VOIP Providers