PencilCase - Transform your designs into native iOS apps in a heartbeat.
OpenToonz - OpenToonz is an animation program that is a free software version of Toonz, the animation software...
codemagic.io - CI/CD for mobile projects and Unity games. Automated releases to Google Play and App Store and no code signing headache guaranteed!
Synfig Studio - Just another WordPress site
Neonto - Visual tool for creating native iOS and Android UIs
Blender - Blender is the open source, cross platform suite of tools for 3D creation.