Desktop Web Server

Web Server that runs on your local machine (DeskTop, Lap Top, Mobile/PDA)

• Dave Winer referred to these as "Fractional Horsepower HTTP Servers".

Probably only for local access, due to Full Peer issues.

Or maybe a Proxy Server for interaction with the rest of the world.

related: Home Server

To be able to add code to it, you'd need OSs to Bundle Many Runtimes.