Textnow.com - It lets you text your friends, aka my only source of happiness
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.
FluffyChat - Open. Nonprofit. Cute ?
WhatsGreen Multi Messenger - Easy access to WhatsApp, Line, Telegram, FB Messenger and many others via the Chrome toolbar.
aTalk - An encrypted instant messaging with video call and GPS features for android.
Green Messenger - WhatsApp Messenger Web for Chrome. Text/Chat on computer. Notifications, messages, tools.