If you are a multi-language user for mac, and need to change the keyboard input language from one to another very frequently,iLove MarkKB is a good choice for you to automatically switch the input source, you can also set the preferred input source for each application on your mac.Just have a try! Key Features: * Remember and switch the input source for each application running on your mac automatically. * Support setting preferred input source for each program. * Lock a fixed input language for each application,even after software/system restart.