I've always liked the Windows Explorer Treeview+Listview style file managers (XYplorer is vey good), but for heavy workloads, nothing beats Total Commander!
For more serious work I always gravitate towards 2-pane file managers like TC (#1 favourite on Windows, which for me is back in the stone age).
Around 110000 files checked out related to the OEIS database. The project is open source here: https://loda-lang.org/
I'm experimenting training a vision transformer with ARC tasks. There are 800 tasks, and each task augmented yields around 10000 files. However my ViT code cannot solve any ARC tasks, but my non-ViT code solves 6 ARC tasks. https://lab42.global/arcathon/leaderboard/