Waver - Description: Google Wave is a great way to communicate and collaborate. Waver lets you:
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
Slack - A messaging app for teams who see through the Earth!
ProntoForms - ProntoForms is a mobile business solutions application, converting paper forms onto any tablet or mobile device.
BSI Knowledge Manager - Central document management & knowledge base
Nintex - Cloud-based digital workflow management automation platform