Als je kijkt bij Launchbar Help -> Tips & Tricks, kun je lezen hoe je LB op de achtergrond kunt laten draaien, zou ik persoonlijk niet doen gezien de beperkingen die ze zelf al aangeven.
"Tips & Tricks
Running LaunchBar without a Dock Icon
In order to get rid of the dock icon, LaunchBar has to be run in “background mode”. To turn on this background mode you have to open the LaunchBar application package (Control click the LaunchBar program file in Finder and choose “Show Package Contents”), navigate to Contents/Info.plist, and open the Info.plist file with TextEdit, e.g. via drag & drop onto TextEdit. At the end of this file find the line containing <key>NSUIElement</key> and change the line below from <string>0</string> to <string>1</string>. Finally you have to save these changes and to restart LaunchBar.
Important Note: In general, background apps are not considered to have a user interface or to become “active”. Thus be aware of the following shortcomings:
* Background apps do not appear in the "Force Quit" panel. You have to use ProcessViewer instead if you need to force quit LaunchBar.
* Background apps do not have their own menu bar. LaunchBar overcomes this problem by putting all the menu commands in the LaunchBar context menu (Click the small icon at the right end of the LaunchBar window or Control-Click anywhere else inside the bar to pop up the context menu). However, this results in a quite large context menu.
* Due to the missing menu bar, OS X displays the menu of the last active application, although this application is no longer active once you activate LaunchBar. This can be quite confusing. When you click in the menu, nothing happens (since the corresponding app isn't active), when you perform a menu shortcut, e.g. Command-Q, it will attempt to quit LaunchBar instead of the app displayed in the menu bar.
* When a background application is added to the "Login Items" in "System Preferences", the "Hide" option has no effect. Therefore LaunchBar will not hide automatically at login, and the bar will be visible until you activate a different application.
* Background apps are not notified, when you logout or shut down. Therefore you will not be asked to save any unsaved configuration changes.
* Background apps are not notified, when the keyboard layout did change. If the proper keyboard layout is set "too late" (e.g. during login, when LaunchBar is autostarted before the keyboard layout has been set), LaunchBar will use the wrong layout.
- The “background mode” can’t be set individually on a per user basis. If LaunchBar is installed in a multi user environment, the modification will affect all users simultaneously. "