Procore - Procore is the world's most widely used construction project management software. Easy to use, mobile platform with unlimited user licenses.
Walkaround - Walkaround is a variant of Wave, based on the Apache Wave code base, that runs on App Engine.
Spectrum - Browser-based app to visualize the frequencies of an audio file.
Slack - A messaging app for teams who see through the Earth!
Corecon - Corecon offers integrated estimating, project management, and job costing for small to medium-sized construction companies.
Rizzoma - Email and IM are linear contextless communication tools.