There are a number of ways to start an application in Kubuntu, but for the purposes of this quick guide, we will only focus on several of the most commonly used methods.
First and foremost, The K Menu allows you to browse and start applications. All Applications” heading. Browse the application categories and on a highlighted application to start it.
on The K Menu will present you with a list of application categories under the “You will notice various icons on the Toolbar that represent the applications they will start if you
them. If you hover your mouse pointer over a Toolbar icon a description of the application it launches will be displayed. You may add your own links to applications that you use often to the Toolbar by on The K Menu icon and highlighting -> -> and on the application you want to add.Katapult: the new item launcher. Press Alt+Space to bring up Katapult then type the name of the program you want to run. Press enter to start the program when Katapult has found it.