Disk Order vs nnn
When comparing Disk Order vs nnn, the Slant community recommends nnn for most people. In the question“What are the best Mac file managers?” nnn is ranked 2nd while Disk Order is ranked 9th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro FTP/SFTP support
Can be used to connect to a server over FTP/SFTP.
Pro Built-in viewer
Disk Order has a built-in viewer for html, rtf, mov, mp3, jpg, gif, tiff and many other file formats.
Pro Versatile dual-pane interface
Disk Order is split in two side-by-side panes each of which can have tabs with different views. Great for easily managing files.
Pro Superfast
Pro Rich set of plugins
Pro Extremely lightweight (120 kb)
Pro Unique navigate-as-you-type mode
Pro Awesome new features being added in every release
Pro Minimal configuration with sane defaults
Default options and navigation is simple to grasp.
Pro Has a great wiki
Pro Sessions
Save and resume sessions.
Pro Supports cd-on-quit
Allows for quick switching between nnn and the terminal.
Pro Previews
The file manager has recently added support for preview hovered files using various methods.
Pro Integrates with the desktop environment and opens files in the default applications
Pro Reasonably well-documented
However, it requires some prior knowledge of inner workings of Linux and there are no tutorials (yet). NNN author is making up for this by actively responding to GitHub issues.