When comparing GNOME Do vs Ulauncher, the Slant community recommends Ulauncher for most people. In the question“What are the best Linux app launchers?” Ulauncher is ranked 5th while GNOME Do is ranked 14th.
Ranked in these QuestionsQuestion Ranking
Users can easily customize the looks of Gnome DO with the available themes in the settings of the app..
Pro Plenty of plugins
By using the many available plugins Gnome Do can become a powerhouse of combined tools in one easily launchable and usable application.
Pro Supports extensions in Python
Pro Able to launch Kdialog, Zenity and Bash scripts
Extensions are easily created. Python script is all open to see. Not compiled like some.
Pro Supports fuzzy search
You can enter app name with a typo and Ulauncher will still be able to find it.
ULauncher supports themes and comes with a good supply on install but more can also be made.
Pro Allows custom shortcuts
Con Has not been updated in a while
With the last update being dated Jan. 2014 development seems to be at a standstill.