Folders
Meet Folders: one free app for 382 kinds of files
Folders is a free, open-source file manager for Android, Windows and Linux that opens PDFs, Office files, 3D models, code, videos and archives itself, with no ads and no account.
Linux
2 guides on this topic.
A Windows file explorer with tabs, and the shortcuts that make it fast
Folders on Windows and Linux: tabs, multiple windows, drag and drop with File Explorer, a see-through window and the keyboard shortcuts you already know. Free and open source.