When the Apple 2020 Worldwide Developers Conference kicks off on June 22 in a new virtual format, a global community of 23 million developers will have the opportunity to join from around the world for free through the Apple Developer app and the Apple Developer website. 

Now in its 31st year, WWDC20 will bring together the largest group of innovators and entrepreneurs ever assembled to connect, share, and create, according to Apple. Among them will be 350 Swift Student Challenge winners from 41 different countries and regions. 

The students were chosen based on their original Swift playground submission, part of Apple’s annual WWDC student challenge, which recognizes and celebrates the next generation of coders and creators.

They include Sofia Ongele, Palash Taneja, and Devin Green. These teens share a life goal best summed up by Ongele: “Make some tech and do a whole lot of good along the way.” All three view challenges in the world as opportunities to effect change. Every problem is a call to action — and they are answering, loud and clear.

Read all about the winners and their apps here.