Here is a few extra items to get started with mapmaking. Unfortunately I am unable to add apps but they are listed below

Moolah dev Map making Project: https://github.com/MoolahModding/MoolahProject/tree/map-making

Fmodel: https://fmodel.app/

Tempo: https://github.com/Tempo-Organization/tempo-cli

WWise: https://www.audiokinetic.com/en/download/