Here is a list of some of the best free Universal File Viewer software for Windows 11/10 to view over 100 different file formats.

If you want to preview files in Windows 11/10 without opening them, then you can use QuickLook, File Viewer Plus, One Commander, or Seer app.

For example, File Explorer in Windows 11 already has tabbed navigation, but the two-window split view is new and lets you easily move files back and forth between two locations.