What are some alternatives?
Slack - A messaging app for teams who see through the Earth!
Procore - Procore is the world's most widely used construction project management software. Easy to use, mobile platform with unlimited user licenses.
Oracle Primavera - Oracle Primavera software includes project management, product management, collaboration and control capabilities.
Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.
Autodesk BIM 360 - Autodesk BIM 360 is a construction project management software.