Windows: XYplorer may not be our favourite alternative file browser on Windows, but it has plenty of fans. It will probably find a few more now that it's free once again.
For a while, XYplorer cost $30 for the basic version, but recently the developer decided to begin offering the free version again. You can still get the pro version for $US30 with limited updates or pay $US80 for a lifetime of updates. The site is a little confusing as the Download link leads to the pro version by default, so we've put links to both versions below.