[steffenabel]

There was a pretty simple way to build a chromium based app with electron that allows you to run old flash application. I built this a few years ago for some customers in my old company because we had a flash backend which we couldn't port to js with reasonable effort.

A quick Google research shows that chromium disabled flash a while ago but you should still be able to use an older version in electron projects. Didn't test it but could be worth a shot.

[lioeters]

There's a Chrome extension for a Flash player, so it may be possible to bundle it and enable by default in an Electron app.