Zoho Creator - Zoho Creator is a low-code application development platform that helps you build a custom, mobile-ready apps to run your business.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Bizness Apps - Create your own app or become a reseller and build apps for others
FreeCAD - An open-source parametric 3D modeler
BuildFire - BuildFire is the easiest way for small businesses to build a mobile app in a matter of minutes for iOS and Android.
Sculptris - Sculptris: Enter a world of digital art without barriers.