World Weather Online - World Weather Online is the best names listed among those weather websites that are best-known for offering reliable and accurate weather forecasts as well as satellites, radar, and historical data for free.
Forecastie - A simple, opensource weather app for Android.
OpenWeatherMap - OpenWeatherMap is a location-based weather information providing service over the internet.
Good Weather - Open source weather app for Android.
Dark Sky - Hyperlocal weather information, now on the web ⛈
MetarWeather - The MetarWeather utility decodes METAR weather reports from around the world, and displays them in a simple weather report table