Bonjour and Wide-area Bonjour (aka DNS-SD) are great for this kind of thing. If you set your dev server to advertise itself users on the local network can just

Bonjour and Wide-area Bonjour (aka DNS-SD) are great for this kind of thing. If you set your dev server to advertise itself users on the local network can just open Safari or Firefox (with an extension) and pick the dev site from a list of services. Wide-area Bonjour enables the same functionality over the internet with a few caveats — you've got to do some additional configuration and only Windows and OS X machines can register services (Avahi can only browse in wide-area domains). That said, you can still take advantage of WAB handling the port-forward and DNS record creation and just pass someone the appropriate URL to access the service.