Good Weather - Open source weather app for Android.
Sunscreen Finder - Find the sunscreen that you will actually use
MetarWeather - The MetarWeather utility decodes METAR weather reports from around the world, and displays them in a simple weather report table
UVLens - Never get sunburnt again
3DWeather - 3DWeather Free is a unique weather application for Mac that shows weather statistics in 3D animated themes.
SunSprite - Solar-powered personal sun exposure tracker