I just thought I would mention it. I didn’t know myself until a couple days ago and I’m a little surprised I haven’t seen more discussion about it.
AssetViewer source is found in the tools folder DagorEngine/prog/tools at ad82b62ef234ab1765670b53a3a8bc1bb1f5c1eb · GaijinEntertainment/DagorEngine · GitHub
Blender extension (python part) is dag4Blend I think, and the c++ part (blk2dag) is in the converters folder.
If I can get around to it I’m hoping I can update the Blender extension to the latest Blender and maybe fix blk2dag merging all objects into one.