When comparing Disk Order vs Finder.app, the Slant community recommends Disk Order for most people. In the question“What are the best Mac file managers?” Disk Order is ranked 9th while Finder.app is ranked 19th. The most important reason people chose Disk Order is:
Can be used to connect to a server over FTP/SFTP.
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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 Built-In
Comes with your system, and is updated alongside the rest of it, so it should never break suddenly or lag in terms of supported features. This is the finder most software will expect to find and use.
Pro Applescript
Finder is well-supported by Applescript and/or Automator.
Cons
Con No move across Window function
Con Very few features
Need for a lot of external tools.
Con No cut option in context menu
Con No right click > create new folder option
Con Write index hidden files to all external storages you connect to
Con Sorts folders between files in some settings
Folders and sorting gets weird in some cases.
Con subfolders side-by-side but no file details
The side-by-side view of several sub folders is useful for many people, but in this view you loose all file details.