Any game developers on this list?
Godot (https://godotengine.org/) is an open-source game engine - I'd call it a viable alternative to the Unity game engine. I recently participated in a "stop waiting for godot" game jam. The idea being, learning this new game engine and making a simple game over a weekend. You can see my little attempt here https://hamnstar.itch.io/log-game, and the rest of the entries at https://itch.io/jam/stop-waiting-for-godot/entries
I'm very impressed by this open source project and the quality you can produce with it (note: my little game is intentionally retro-looking :) )
-Troy