That seems a bit similar to the Ranger[1] given as an example in the article. There's also ranger.el[2] for Emacs. By default in ranger.el (and I assume Ranger

That seems a bit similar to the Ranger[1] given as an example in the article. There's also ranger.el[2] for Emacs. By default in ranger.el (and I assume Ranger too, but I haven't used it), B is the current level, A is the previous level and C is a preview of whatever you have selected in B. You can hide the preview (so the current level would be C) and add more previous levels. There's no compressed view of all previous levels though. [1]: https://en.wikipedia.org/wiki/Ranger_(file_manager) https://en.wikipedia.org/wiki/Ranger_(file_manager) [2]: https://github.com/ralesi/ranger.el https://github.com/ralesi/ranger.el