Google Voice is a VoIP/SIP program that can be used to make free or very cheap phone calls to many countries around the world. If you’re located in the United States, then your calls to the USA or Canada will be completely free. Not only that, but the program comes with a rich feature-set that includes voicemail, conference calls and video conferencing, SMS to email, a voice transcription service and a full featured contact list that lets you manage all your contacts’ details.
PIKA Technology
PIKA provides SIP VoIP gateways to SIP service providers. Reliable, extensive interoperability, low cost of ownership
Read moreTop countries:
United States 1294
India 440
United Kingdom 425 Canada 348
Bangladesh 338
China 142
Pakistan 134
Australia 133
Spain 123
Russia 114View all countries