[mook]

Unfortunately historically there was a history of Mozilla not being a very stable platform to develop on top of (though I have no idea if Chromium was worse). There had been at least two separate embedding APIs that have been abandoned (the original one in the ActiveX control era and the external one after they moved to Hg), at least three Electron-like things (prism, XULRunner, and positron), and the field of corpses of Mozilla-based apps (I've worked for two, there were lots more).

Maybe they're better at API backwards compatibility now? Not sure; I'm unlikely to try again given previous experience. Which is a shame; I still use Firefox since it was called Phoenix…

If anybody has more recent experience working on their stack, I'd be happy to be correctly though. Preferably with examples of projects that _haven't_ been burned.