Castle Game Engine - An open-source 3D/2D game engine for ObjectPascal.
Player.me - Player.me is the social discovery platform for the gaming community.
Open 3D Engine - Open 3D Engine is an open-source 3D game development engine in real-time.
Replai - Unlock the full potential of your video creatives with Replai
WaveEngine - The definitive free cross-platform mobile engine to unleash your games using C#.
Megacool - Simple SDK to record and share gameplay as a GIF