打开键盘首选项，点击修改键…您可以将大写锁定键更改为控制、选项、转义或命令。

Seil还不能在macOS Sierra上工作，所以我使用Karabiner Elements，从https://pqrs.org/latest/karabiner-elements-latest.dmg下载。

要么使用GUI，要么将以下内容放入~/.karabiner.d/configuration/karabiner.json:

{
  "profiles" : [
    {
      "name" : "Default profile",
      "selected" : true,
      "simple_modifications" : {
        "caps_lock" : "escape"
      }
    }
  ]
}

打开键盘首选项，点击修改键…您可以将大写锁定键更改为控制、选项、转义或命令。

In order to actually swap the escape key with the caps lock key (not just map one to the other) using both PCKeyboardHack and KeyRemap4MacBook, you have to follow the instructions in this thread, mapping the caps lock key to a keycode not used by the keyboard but accounted for by KeyRemap4MacBook (eg. 110). Then, in PCKeyboardHack, select the appropriate option that maps that keycode to escape (in the case of 110, it's "Application Key to Escape"). Here's what your KeyRemap4MacBook preferences should look like (provided you've selected the "show enabled only" checkbox).

我最初试图发布这个信息作为cwd的优秀答案的编辑，但它被拒绝了。我鼓励任何想要走我描述的路线的人先读一下他/她的回答。

自macOS 10.12.1以来，可以将Caps Lock重新映射为Esc本机(Apple > System Settings…> Keyboard > Keyboard Shortcuts > Modifier Keys in macOS 13，或之前的System Preferences -> Keyboard -> Modifier Keys)。

Karabiner-Elements 一个功能强大和稳定的键盘定制macOS。(免费)

https://pqrs.org/osx/karabiner/index.html

为我在莫哈韦把大写键改成退格键