我找到了一种使用Swift和Cocoa API的方法.大概，使用普通C也应该可以，但这对于我的应用程序来说已经足够了.

I found a way to do it using Swift and Cocoa APIs. Presumably, this should also be possible using plain C, but this is good enough for my application.

import Foundation
import AppKit

// Get all running applications
let workspace = NSWorkspace.shared
let applications = workspace.runningApplications

for app in applications {
    print(app)
}

app是NSApplication对象，并且具有捆绑标识符，这是我想知道的.

app is an NSApplication object, and that has a bundle identifier, which is what I wanted to know.