Call for Code, initiated by IBM, is a global initiative aimed at addressing societal challenges through open-source technology, engaging over 400,000 developers worldwide since 2018. The initiative features a Global Challenge, where developers use free access to weather data APIs from The Weather Company, an IBM business, to create innovative solutions, such as outdoor and navigation apps that utilize weather information to enhance user experience. Winning solutions are incubated and deployed in communities to maximize impact. The Weather Company offers extensive data products, including APIs for current conditions and radar overlays, which developers can integrate into applications to provide users with detailed weather insights. As part of the competition, developers are encouraged to create applications that mitigate climate change effects, with the challenge remaining open for submissions until July 31st.