In my previous free voip calls post I have mentioned about how one can make free voip calls on internet with different voip service providers available in the market. In this post I would like to include top 6 voip service providers who are in the market for long time and serving people all over the world with great sound quality as well as with cheap and free calling methods. There can be some other opinions about the top 6 voip providers, but what I think is my top 6 is because they are there in the market from longer times, provides clear voice quality, not only provides calls for landline number but as well for mobile. They can provide voip calls for small business and businesses which are not so small.

Here is the list:

1) Skype: It is was best, is best and hope will be best in voip industry. Provides crystal clear voip calls along with HD video calls. You can make conference calling with 3 or more people. You can have it on your latest mobile phones. Very easy to purchase the credits and make international calls to almost any part of world.

2) Phone Power: Phone Power VoIP provides domestic home & small business calls, international calls, hosted pbx service, sip trucking for small business at very nominal rates. This offers includes free calls to USA and Canada. One can use their digital phone service with free VoIP adapter to plug in any telephones to make and receive international phone calls, with same number he haves or can have another number at no extra cost. It is very easy to set up. It has very good customer service.

3) Vonage: Another famous name in voip industry, provides International Calling Plans to more than 80 countries including India. You can also make Unlimited local and long distance free calls across U.S., Canada and Puerto Rico. The price is not very high in compare to industry leaders. The customer service is also one of the plus points. You can avail this service for as little as 11.99 usd per month. You can also get Caller ID with Name, Call Waiting, Call Transfer with any plan you purchase.

4) Google Voice: It has taken voip world by storm. A service by Google is already being talked several times. You can make calls with this service even from your Gmail account. Make free calls in U.S. and Canada free of charge. It is very easy to set up, nothing to download and you can also have custom voice mail messages for your contact list. Cheaper rates, great name behind, what else you want.

5) Lingo: You can try Lingo free for first month, then after its 23.95/month. If you are one of them who makes unlimited international voip calls, lingo is the voip service provider for you. You can make unlimited local as well international calling across the US and to 45 countries with Lingo worldwide plan.

6) Ringcentral : A bit high priced than other, but worth having this voip provider who offers 800 numbers, toll free numbers, virtual pbx, internet fax and virtual phone system. Once you go with this voip provider you will not think of others to go with. The only thing is you check all the offer more accurately before signing up with the voip provider.

Feel free to post your reviews in the comments section with the voip service provider you are dealing in right now or if the above written voip providers experience with you.