Marijuana 101 - Free course to become a better cannabis user in 10 days
Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Eaze - Uber for medical marijuana
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Leafly - The World's Cannabis Information Resource
OwnTracks - Cross-platform location sharing