This is little old though and something similar to WebIOPi, but it\’s growing steadily and the features packed in are a treat for Pi and HW enthusiasts.
Check out BerryIO here: https://github.com/NeonHorizon/berryio
Just including one screenshot 🙂
![\"\"](\"http://anwaarullah.com/wp-content/uploads/2013/12/BerryIO.png\" "\\"berryio-png\\"")