So very cool to see such a wide variety of tools and engines employed in development. Here's our current list. I am sure I am missing some small utilities. Some of these can be their own topics when talking about a DAW, so broad strokes here.
Godot Engine is the engine we're creating games in now (we used to work in Unity).
For assets and images Blender and Krita are our go to. Though for doing straight pixel work we've been using PikoPixel.
Audio and video production is a pretty heavy topic. Traktion Waveform is our DAW. Kdenlive for creating videos. OBS Studio for recording raw video. We do use straight FFmpeg via command line for automation and fun audio and video tricks.
For testing our games on other platforms we're using VirtualBox (macOS virtualizing mostly) and Wine.
When in need of a text editor, we go between Atom and gedit. Atom has a neat trick for doing collaborative editing.
Last, but perhaps one of the most important tools you can deploy, git for source control. No frills. Straight command line.
Alright...if I forgot anything....well...I'll try to add it if it comes to mind.
~ Skunkie