Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
Waver - Description: Google Wave is a great way to communicate and collaborate. Waver lets you:
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Rizzoma - Email and IM are linear contextless communication tools.
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.
BSI Knowledge Manager - Central document management & knowledge base