Blender - Blender is the open source, cross platform suite of tools for 3D creation.
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!
MakeHuman - MakeHuman is a free, open source, interactive modeling tool for creating custom 3D human characters.
Dropsource - Mobile development platform for building native iOS & Android apps
ZBrush - ZBrush is a digital sculpting and painting software solution.
GoodBarber - GoodBarber is a mobile app creation platform.