aTalk - An encrypted instant messaging with video call and GPS features for android.
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
Talk360 - Talk360 is a best-in-class communication utility that offers a convenient way to connect with loved ones globally.
WhatsGreen Multi Messenger - Easy access to WhatsApp, Line, Telegram, FB Messenger and many others via the Chrome toolbar.
FluffyChat - Open. Nonprofit. Cute ?
Green Messenger - WhatsApp Messenger Web for Chrome. Text/Chat on computer. Notifications, messages, tools.