Crowdin - Localize your product in a seamless way
OpenToonz - OpenToonz is an animation program that is a free software version of Toonz, the animation software...
POEditor - The translation and localization management platform that's easy to use *and* affordable!
Synfig Studio - Just another WordPress site
Lokalise - Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.