I installed kdiff3 on my m1 mac using homebrew but it seems that it doesn't have an apple m1 optimized version and hence takes 2-3 secs to open. Does anyone know of a file comparison tool similar to kdiff3 that is fast on m1?

  • I just tried, the delay happens only the first time (as it should be). Do you really get the delay each time you run the application.
    – nohillside
    Jan 28, 2021 at 18:29
  • 2
    A KDE app that launches in only 3 seconds and it's a problem? Jan 28, 2021 at 18:31
  • @nohillside yeah it isn't getting delayed each time, I just reacted based on the initial load time time. Later, it just stays open so it doesn't take much time.
    – Raj Shah
    Jan 28, 2021 at 18:35
  • The M1 optimized VSCode (pretty heavy) takes just a second to open so I've gotten too used to close to 0 initial load times.
    – Raj Shah
    Jan 28, 2021 at 18:37
  • 2
    As I said, I got the delay the first time I started it. Any later start was basically instant.
    – nohillside
    Jan 28, 2021 at 18:39

1 Answer 1


A app called FileMerge is included with Apple's Xcode developer tools. It's a GUI app with a command-line variant called opendiff. FileMerge is optimized for M1 Macs. If you install Xcode, you'll find FileMerge at the path shown below and in the screenshot (it's a quick Spotlight search away as well): /Applications/Xcode.app/Contents/Applications/FileMerge.app

FileMerge location

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