I'm not sure if it works on Finder, but you can use Pictogram and use icon files from macOS Icons to change the app icons. Source: about 1 year ago

If you don't want to change the icon manually everytime after an app update, you should get Pictogram. Source: about 1 year ago

You can also use Pictogram for the custom icon to persist through the updates. Source: about 1 year ago

Pictogram is free and does the job. It doesn't work with apps from the App Store, but neither do any of the alternatives so if you want to customize those you'll have to do it manually. Source: over 1 year ago

That will not persist across app updates. Pictogram can do this though (it's free). Source: over 1 year ago

The most famous is the clipboard one (https://ditto-cp.sourceforge.io/). I'd be surprised if they were referring to another "Ditto" software. - Source: Hacker News / 3 months ago

I use Ditto (https://ditto-cp.sourceforge.io/). It uses about 5MB Ram and lets you expire clips. - Source: Hacker News / 6 months ago

Ditto works well for me. If you have a cloud based file storage service like Google Drive or Dropbox, put the ditto database file in that folder and you'll also have an auto backup. Source: 7 months ago

In case you are not aware: https://ditto-cp.sourceforge.io/. - Source: Hacker News / 10 months ago

For example: the wonderful Ditto Clipboard Manager is both an old-style .msi installer here https://ditto-cp.sourceforge.io/, but it is also on Crapstore here: https://apps.microsoft.com/store/detail/ditto-clipboard/9NBLGGH3ZBJQ?hl=en-us&gl=us. Source: 12 months ago