When comparing Rofi vs DockbarX, the Slant community recommends Rofi for most people. In the question“What are the best Linux app launchers?” Rofi is ranked 1st while DockbarX is ranked 8th.
Ranked in these QuestionsQuestion Ranking
Pro Can run commands
<code>run: st toxic</code> Runs a tox client in the terminal emulator "st".
<code>run: maim ~/Images/screenshots</code> take a screenshot with "maim" and save it to given location.
Pro Minimalist design, yet can use customizable themes
Also it's easy to make use of your own "plugin" (scripts).
Pro Clipboard history extension
Greenclip adds clipboard manager functionality: https://github.com/erebe/greenclip
Pro Great keybindings
They seem to be emacs based.
Pro Case insensitive
Instead of having to worry about case sensitive characters, you can use caps or lowercase wherever you please without causing any issues.
Pro Easily switch windows without mouse
Pro Great plugin to help blend in to XFCE4 panel
DockbarX has an available plugin called "DockBarX Xfce4 Panel plugin" that allows DockbarX to blend in seamlessly with the XFCE4 panel, which is great for XFCE users due to the limited options of the default panel.
Pro Easily the best Win 7 taskbar functionality
If you want a combined launcher/manager, a la Win 7, this is it.
Pro Easily customized
DockbarX has inbuilt settings that allow the user to easily customize the look of the dock, from changing the text color to the background color.
Con Issues when Caps Lock is active
When typing with Caps Lock activated, it's impossible to use Backspace. Rofi eventually freezes in this scenario.