Waver - Description: Google Wave is a great way to communicate and collaborate. Waver lets you:
ShareVault - ShareVault provides Virtual Data Rooms for secure document sharing during due diligence and other business critical processes.
Slack - A messaging app for teams who see through the Earth!
CapLinked - CapLinked provides simple and secure virtual data room solutions for online document sharing and management. Enterprise-grade security and 24/7/365 support.
BSI Knowledge Manager - Central document management & knowledge base
iDeals Virtual Data Room - iDeals Virtual Data Room is a tool that provides secure access to large amount of confidential documents and can view, analyze and collaborate in a protected environment.