Skykit - Google-based digital signage CMS for enterprise deployment
OpenToonz - OpenToonz is an animation program that is a free software version of Toonz, the animation software...
mediaPanel - MediaPanel's digital signage is a full package of professional business communication services and offers every service that businesses need to communicate effectively.
Synfig Studio - Just another WordPress site
SmarterSign - Cloud-based digital signage tool for all businesses sizes
Blender - Blender is the open source, cross platform suite of tools for 3D creation.