When comparing SpaceFM vs jFileProcessor, the Slant community recommends SpaceFM for most people. In the question“What are the best file managers for UNIX-like systems?” SpaceFM is ranked 11th while jFileProcessor is ranked 26th. The most important reason people chose SpaceFM is:
Just right click on any menu or menu option (including the context menu itself) and you'll be allowed to customize it. This lets you add support or integration for features you find missing.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Incredibly customizable
Just right click on any menu or menu option (including the context menu itself) and you'll be allowed to customize it. This lets you add support or integration for features you find missing.
Pro Minimal dependencies
It only needss gtk, udev, desktop-file-util and shared-mime-info which is available in most systems.
Pro Highly extensible
Functionalities can be extended by user scripts as plugins. Some scripts can also be downloaded from https://github.com/IgnorantGuru/spacefm-plugins/wiki. Plugins can be exported too.
Pro Tab and panel support
SpaceFM supports up to 4 individually customizable panels as well as multi-tabbed file management.
Pro No back seat driver
Does not obstruct professional work by engrossing root warnings.
Pro Desktop management support
Can be used to set wallpaper and desktop icons with high configuration support.
Pro Easily open folder as root
Can open different folders as root, this way you don't have to use the terminal to move around files for which you need root permission.
Pro Gtk-2 and 3 support
Available in gtk2 and gtk3.
Pro Intuitive and extendable through plug-ins
Great UI, easy to use and configure, several plug-ins available to make everyday tasks even easier.
Pro Easy to run commands on selected files
Find/select files in sub-folders. run touch %f or cp %f /somefolder (this is a way to copy selected files in different levels, into 1 folder, flattening out the copy).
Pro Easy rename files script
Select files. regex to match pieces of filenames, rename adding, leaving out, and reusing saved pieces.
Pro Groovy scripts to watch and act on files that get created/put into a folder.
So you can watch a folder and process files that come into it.
Pro You can make your own file associations. You can make 3 types, per suffix, per filename, per exact file.
With exact file you can create a folder of job or desktop icon names. Double-click that file to run the job since it is tied to just that specific file.
Pro Can make sftp connections
Pro You can write a script to modify your list
Your script can modify contents in the list window it is working on.
Pro Plugin scripts
Just put groovy scripts in menu-scripts folder and they will automatically run using currently selected files.
Pro Run any groovy scriptable command on a list
Run commands on your lists: grep files to find stuff, delete/copy/move files, etc.. Even copy a file to a remote host and execute it.
Pro Create and work with lists of filenames or any string
Search files and save to another file or a list window. Add or subtract one list from another.
Pro Can do count only
Just count matching search criterion.
Pro Good search
Search on modified time, file size, glob/regex name, folder depth; and/or on these and can do range.
Pro Cross-platform
Available for Linux, Windows, macOS - just needs java 7+ (written with 8).
Cons
Con Ugly
Con Some operations are slow
Because it tries to be as lightweight as possible and tries to use very little RAM. This can unfortunately lead to it being slow sometimes.
Con Not for everyone
Con Ugly
Con Does not see attached phone files
No mtp:/ connected phone files.