Night Sky is an HTML5 based night sky viewer, displaying the 750 brightest stars and the moon.
http://www.mpetroff.net/files/nightsky/
Night Sky is distributed under the MIT License. For more information, read the file COPYING or peruse the license online.
Moon calculations are done using SunCalc, which is BSD-licensed, and star calculations are based on this library.
Star data is based on the HYG star database archive.