CKEditor - Real-time collaborative future-ready rich text editor
Unity - The multiplatform game creation tools for everyone.
Summernote - Summernote is a JavaScript library that helps users create WYSIWYG editors online.
Godot Engine - Feature-packed 2D and 3D open source game engine.
Froala Editor - Froala Editor is a WYSIWYG HTML editor that enables rich text editing capabilities for the applications.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.