WhatsGreen Multi Messenger - Easy access to WhatsApp, Line, Telegram, FB Messenger and many others via the Chrome toolbar.
App for WhatsApp by coldX - Integrated WhatsApp functionality on the Desktop.
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.
WhatsApp Web To Go - WhatsApp Web client for your phone/tablet with media support
WowApp - Wowapp is the best alternative to Skype and you will get paid to use it!
WAToolkit - A set of useful and lightweight tools for WhatsApp™ Web client.