aTalk - An encrypted instant messaging with video call and GPS features for android.
TextNow - TextNow is a mobile virtual network operator (MVNO) that provides a free phone service to users by using other cellular networks coverage.
Talk360 - Talk360 is a best-in-class communication utility that offers a convenient way to connect with loved ones globally.
FluffyChat - Open. Nonprofit. Cute ?
TextMe - TextMe is a free calls and messaging application at both local and international levels.
TeleGuard - TeleGuard is a secure messenger that makes it store that your data or chats are not stored while collaborating or communicating with partners and friends.