Gifs.com - Easily turn videos into a GIF
Unity - The multiplatform game creation tools for everyone.
Piktogramic - Guess the game's chosen subject on your own or with friends!
Godot Engine - Feature-packed 2D and 3D open source game engine.
Crumbles - Crumbles are like reaction GIFs with a way bigger vocabulary
Blender - Blender is the open source, cross platform suite of tools for 3D creation.