When comparing Worker vs SpaceFM, 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 Worker is ranked 21st. 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.
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Pros
Pro Innumerable button-click file ops are integrated
Rename files, move to other directories and extracting archives are of course a given...BUT THERE'S MORE! Convert media formats, make symlinks, CHMOD, change graphic formats, integrated GPG, filename UPPER/lowercase adjustments and more with just one button click!
Pro Remote access
Worker supports access to remote machines through various ways (ssh, ftp, rsh, http and webdav).
Pro Low system requirements
The system requirements for Worker are pretty low, making it a great option for lower-end machines. The reason why they are pretty low is because Worker is basically made of just X11 libraries.
Pro Configuration GUI
Worker has a built-in configuration GUI.
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.
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.