When comparing ueli vs Krunner, the Slant community recommends Krunner for most people. In the question“What are the best app launchers for UNIX-like systems?” Krunner is ranked 8th while ueli is ranked 17th. The most important reason people chose Krunner is:
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Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro You can choose how deep into the launcher you want to go
Light or advanced user - both will have a positive experience.
Pro Doesn't keep annoying you with "I'm here!", "I can also do ... " pop ups
Pro It's easy to make scripts which can start all the programs you need for your task
Pro RESTART, HIBERNATE, SHUT DOWN or SLEEP at your finger tips - no screen needed
Pro You can quickly write system commands
Pro Execute command line commands directly
Pro Free and Open Source
Pro Everything compatibility
Pro Built-in translator
Pro Opens folders/files also
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Pro Extensible with plugins
Krunner can be extended with the use of "runners" which are essentially plugins for the app launcher to allow for extra functions.
Pro Fast
As it is written in Qt QtQuick using QML.
Pro Lots of handy features
Such as a fully featured calculator, file opening, browser functions, currency conversion, date/time functions, etc.
Pro Great integration with Plasma, developed by KDE
Pro Can be used to open websites
By just typing an URL into the text box users can have the site open in their default launcher.
Pro I'm able to find open tabs from browsers with KRunner which is very nice
Even supports edge browser.
Cons
Con The tray icon is only available in white
If you run the bright version of Windows, the icon is virtually not there.