Smartwaiver - Smartwaiver is an online waiver solution for business to manage signed waivers and customer data.

Walkaround - Walkaround is a variant of Wave, based on the Apache Wave code base, that runs on App Engine.

Waiver Electronic - Waiver Electronic is one of the legit and secure platforms to manage online liability waivers accelerating the productivity of your business by making the quick, paperless and secure waiver signup process.

Slack - A messaging app for teams who see through the Earth!

WaiverSign - Cloud-based waiver and release of liability signing software

Rizzoma - Email and IM are linear contextless communication tools.