I only problem with Opera's Dragonfly - and I mean only - is that I (seem to) need an active internet connection to use it.<p>Twice in the last year I have started working on experimental UI stuff on a plane, run into a quirk, and tried to start debugging... the futility only hits me once it fails to come right up.<p>I have all the usual http servers installed on my laptop, so it would be alright if I just needed to deploy something locally. But Opera has that capability baked into the browser already, so I'd appreciate it if they could just toss in Dragonfly as well.