I'm a software engineer and had the opportunity to sail across the Atlantic a couple of times.
During my first transat, I met Olivier Bouyssou, who develops the Weather4D applications running on iOS and Android platforms.
Weather4D combines weather forecasting, weather routing, navigation with nautical charts to make sailing safe and fun from preparation to post navigation.
We used Weather4D on a daily basis to prep and during our navigation. Needless to say it was a tremendous experience to cross with Olivier. We've become close friends since and I started evangelizing Weather4D