Chris Lightfoot - obituaries and some of his wonderful software

Chris Lightfoot was a gifted and committed software developer, who died in February aged 28. You get a good sense of his talents and achievements from this obituary by MySociety's Tom Steinberg and from this one in The Times. Chris was the developer behind the previously featured Pledgebank and WriteToThem (which provides a reliable way to write to your elected representatives), and other systems, for example the Downing Street on-line petition web site, Political Survey, as well as the system that generates maps like the one above, which shows travel-time "isochrones" around Edinburgh. For an explanatory essay, and some other travel-time isochrone maps, see this page on the MySociety web site.