1) Raketu – A pretty decent service that offers FREE calls to 42 countries. I rate it higher than VOIPbuster/Discount for the simple reason that it is not a clone and uses a different technology than Skype. Skype uses supernodes which can be vulnerable to hacking. I covered those issues on my blog before. In addition, it integrates with messengers from Yahoo, MSN, etc.
Benefits: Better technology, Clear Voice, 42 FREE countries, Integration with other Drawbcks messengers- Haven’t found any yet.
2) Jajah – I tried jajah about 1 month ago and with its FREE minutes I made calls to India. The difference between jajah and other VOIP providers is that Jajah only allows you to make calls from your phone. That means you must provide your phone number and the caller’s number before you can make a call. When you start a Jajah call, connect your phone first. You answer the call and then lol it connects to the other party.
Benefits: No need to download software. Just visit their site. No credits needed for free calls. Disadvantages: You have to use a legitimate number before calling. Can’t use PC to make calls.
3) Gizmo: Popularly known as “Skype Killer”. This software allows you to call anyone in more than 60 countries. The only drawback is that you and the other party must be registered with Gizmo and you must also register your numbers. I am sure that this project will be successful and in a short time the database of people will be built and then it will be a world of FREE calls.
Pros: Making calls is easier than ever, Killer Application interface, Cons: Requires both parties to register their numbers with Gizmo.
4) Voipcheap – This is the original VOIPcheap and not the UK version of this company. Although VOIPbuster, voipcheap.co.uk uses the same software, I found this software more reliable and the voice quality is of a high standard. This is an outright winner when it comes to making FREE calls around the world. You can virtually call over 50 countries on regular PSTN landlines and mobiles in Singapore, the US, Hong Kong and Canada. With some hacks you can call from countries that are not on the FREE list but you have a solution. You have to check my blog for that.
Benefits: Clear voice, You can make calls from your PC. No need to buy any credit from them before making free calls. Allows PC or phone to initiate a call (via Directdial)
Disadvantages: really none.
5) voipraider/ voipbuster: All these companies belong to Betamax GMBH, a European company that deals with VOIP. They offer extremely low competitive rates to many countries, but have almost zero customer service.
Benefits: 1 or more additional countries (Thailand + mobile) on Voipdiscount. Cons: No customer service. Change the rate at any time.
I hope this article will help you to make free international calls.