Nearly everything works in firefox. Most features exist in Chrome but are marked experimental and can be enabled by a command line flag (I think). If you're sel

Nearly everything works in firefox. Most features exist in Chrome but are marked experimental and can be enabled by a command line flag (I think). If you're selling a continuous integration service to developers, you'll probably be perfectly fine using any of this in a year or two. If you're selling "how to use your email client" video lectures to the elderly, you might have to wait 10 years. There is no single "real world".