A port of https://www.ootputilities.com/capmaker/ to an Electron-based desktop app.
Because I'm not a registered developer with Apple, macOS may block the app for security reasons (not a bad thing for it to do, ultimately). If this happens, just CTRL-click on the app and choose "Open" from the menu - that will bring up a slightly different version of the security message with an option to open the app. You should only have to do that once and macOS should store an exception for the app going forward.
Similarly, Windows users may also need to click through a SmartScreen warning.