I know that this marks me as a graybeard, but this has nothing to do with the Finder; it's (after 10 minutes investigating) a decent mc style file browser. The Finder <i>was</i> the spatial interface to the Mac file system. It's been dead for years; the zombie Finder that Apple currently ships is a hideous, mutant hybrid, neither Workspace fish nor Finder fowl.
This is taken from the list in another submission: "Unix tricks" or similar. I tried it today, but found not vim-like enough (no help under :h ?). I then started searching and found vifm: <a href="http://vifm.sourceforge.net/" rel="nofollow">http://vifm.sourceforge.net/</a> - and after a few minutes I was comfortable with it. I didn't use mc even once today; it's just day one so I don't know if this will stick with me, but it shows much promise.
I like ranger, and have used it for a few years, but I don't understand why it would be considered a clone of Finder. They are both file managers, that is about all they have in common.
I found ranger slow. I use cetus (its fast and you can select files with a hotkey (<a href="https://github.com/rkumar/cetus" rel="nofollow">https://github.com/rkumar/cetus</a>). There's also a shell version which has a lot more functionality and even a vim mode (since some people here are asking for vim like behavior: <a href="https://github.com/rkumar/zfm" rel="nofollow">https://github.com/rkumar/zfm</a>)
An answer and a question:<p>Re: "The secondary task of ranger is to psychically guess which program you want to use for opening particular files.", you can also do `open somefile' to have that file opened in its default app.<p>And does anyone know if there is anything for OS X that clones your current directory between a terminal and a Finder window? That would be amazingly useful.
I looked into this a year or so ago when I was looking to "vimify" my whole setup. I couldn't get into Ranger because of the lack of real image previews (I was doing a lot of image processing stuff at the time). W3M looks like it will help a lot with that though, so I'll definitely give it a second shot.