
I just wanted to say, "Thank you!" to Christian for his ongoing support and updates for Total Commander. I've been using TC for, I think, 15 years or so, and happily registered my copy of "Windows Commander" about 10 years ago. It's, literally, the first thing that I install on any new PC I get.
My favorite features are the Multi-Rename Tool, the ability to queue and pause multiple copy/move jobs (a lifesaver when working with large sets of files), the quick preview (F3), favorite directories, directory sync, and seamless work with archive files. Alt-F1/F2, F5, F6, shift-F6, ctrl-R, and shift-alt-enter are in my muscle memory. There are many, many other features that I've used over the years that have come in handy (combining/splitting files, file hash verifications, MIME encoding/decoding, etc). It's a true "Swiss Army knife" of file managers that is a dependable and valuable tool.
Incidentally, after going through several file management apps for Android, I'm now using TC there as well. On android, it's a no-frills manager that does all of the basics very well. I use it often when I travel to copy ebooks and audiobooks to my phone via VPN from my file server at home.
Again - thank you, Christian!