The METAR Repository or simply metarr is a web-mapping service, capable of gathering and visualizing METARs (meteorological aviation routine weather reports). So aeronautical weather information becomes browseable on a map, even for "METAR-illiterate"
Viperfish is intended for the sailor looking to improve his weatherforecasting. Viperfish provides the ability to visualise and modify GRIB (weather prediction) files, it can plot routes and provides routing based on coming weather and boat performance.
VWSphp is a weather portal for users of the Virtual Weather Station by AmbientWeather. It gives owners of the VWS software the ability to build a weather website, using PHP, that allows users to view and query current and historical weather data.