I saw this demo'd at MongoDB conference by Gilt Groupe. Hummingbird display only supports webkit. My friend made the same thing later that night (took him m

I saw this demo'd at MongoDB conference by Gilt Groupe. Hummingbird display only supports webkit. My friend made the same thing later that night (took him maybe 1 hour total) using tracking pixel + Tornado + javascript graphing software (not canvas). The admin panel worked in IE/Firefox too b/c he used long-polling (not websockets). You can definitely roll your own to offer multi-browser support.