wifiheat
Wifi Heatmap
You have to modifiy the indices of the WIFIData class if you want to use different CSV file format. This configuration works well with https://github.com/tjanson/WifiLocationLogger which fits my main use case. Feel free to fork and modify (and push if you want to).
To compile the coffeescript file you have to install coffeescript and execute coffee -w -c wlanscript.coffee in /js