Karabiner F1 to Launch Safari?

Solution 1:

Modify private.xml and add:

<item>
   <name>F1 Safari</name>
   <identifier>f1_safari</identifier>
   <autogen>__KeyToKey__ KeyCode::F1, KeyCode::VK_OPEN_URL_APP_Safari</autogen>
</item>

Then enable it in Change Key. Depending on your settings (Consumer Keys or F1-F12 for the F-keys) in System Preferences -> Keyboard -> Keyboard -> F-key behavior you may have to hit the fn-key also.