Auto switch input suorce ( 自动切换输入法 ) 是一款可以为mac应用指定默认输入法的工具。能够根据当前正在运行的不同的应用程序，自动切换对应的输入法，免去人工手动切换.可设置快捷键，在特定情况下，按下组合键快速切换到指定切换输入法。
When working with multiple applications in different languages, you may have to switch the keyboard’s input source many times. Even though there are keyboard shortcuts to make switching the input source quicker, constantly pressing the keys can still be a huge pain. Luckily, there is a way to force OS X to remember the input source for each app and switch to it automatically whenever you use the app. By default, this feature is disabled. Continue reading to find out how to enable it to increase your productivity.
Switching keyboards automatically can be really useful when you use multiple input sources on your MacBook, especially when there are more than two sources. This feature is able to remember the language for each window, which means you can use different languages for every window of the same app, not just different apps.