Mitel - Business Communications and Collaboration
XO Hosted PBX - Hosted PBX is a scalable UC solution that uses cloud technology to integrate HD voice & data services, mobility, along with advanced calling
Phonebooth - Phonebooth is one of the leading voip providers, providing phone systems & phone service for small businesses.
Zoiper - Cross-platform VoIP softphone dialer for SIP and IAX systems
SendMyCall - We offer virtual and toll free numbers in more than 65 countries and providing innovative, cost-effective solutions. Increase your Business presence worldwide - Contact Us!
Sipdroid - Free and open-source SIP/VoIP Client