Callmama - Get cheap international calling, international virtual number, Call Mama Gives an added advantage to send message and make calls to non-user of Callmama App.
CallHippo - Easy to use Phone System with World-Class Support
Loop Communications - Loop Communications provides hosted VoIP business phone systems to small businesses and mid-sized companies.
KrispCall - Virtual cloud phone system for business
Vonage - Vonage is a cloud-based all-in-one VoIP software solution designed for multiple industries such as accounting, healthcare, finance and marketing etc.
Global Call Forwarding - Global Call Forwarding offers local and international toll free numbers which can be forwarded to any phone, anywhere in the world.