Disciple - Grow, engage and monetise your community with Disciple community software. Get your own branded community platform on Web, iOS and Android
GBWhatsapp - GBWhatsApp is a similar version for WhatsApp Plus have many new features
Proboards - ProBoards is a host of free forums with customer service.
WaStat – WhatsApp tracker - WaStat – WhatsApp tracker app shows the last online time of a phone number at a glance, so you can contact them whenever they get online to share something important to them.
Forumotion.com - Create a free forum : free forum hosting, free forum skins, templates editing, chatbox, RPG mod... Choose PhpBB 2 - 3, Invision or PunBB. Create forums now!
Whatsdog Last Seen - Whatsdog Last Seen app shows the accurate last online time of all the phone numbers in your contact list to message them right on time and get an instant reply from them.