TextNow - TextNow is a mobile virtual network operator (MVNO) that provides a free phone service to users by using other cellular networks coverage.
CallHippo - Easy to use Phone System with World-Class Support
TextMe - TextMe is a free calls and messaging application at both local and international levels.
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.
Talk360 - Talk360 is a best-in-class communication utility that offers a convenient way to connect with loved ones globally.
KrispCall - Virtual cloud phone system for business