1. Godot Engine (Game Engine)
https://godotengine.org/
2. Blender (3D Art)
https://www.blender.org/
3. GIMP (2D Art)
https://www.gimp.org/
4. Taiga (Planning)
https://www.taiga.io/
5. Twine (Narrative)
https://twinery.org/
6. Drone (CI/CD)
https://drone.io/
7. Penpot (Whiteboard)
https://penpot.app/
– Excalidraw (Whiteboard)
https://excalidraw.com/
8. Ardour (Sound)
https://ardour.org/
9. AppFlowy (Documents)
https://www.appflowy.io/
10. Colyseus (Networking)
https://www.colyseus.io/