Gather Town - Spatial video-chat worlds for work and play
GoodBarber - GoodBarber is a mobile app creation platform.
SpatialChat - Virtual space platform to help remote teams collaborate.
Siberian CMS - Siberian is an Open-Source and Free App Maker. Unlimited Push Notifications. Unlimited features. Fully Customizable. Download it and build your own app now!
Teamflow - Feel like a team again with your own virtual office
Dropsource - Mobile development platform for building native iOS & Android apps