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Call for Code Global Challenge 2021 (chance to win $200,000 USD)

Updated: May 24

Submission Deadline: July 31, 2021

Built on open-source principles, the Call for Code Global Challenge asks developers and problem solvers to form teams and develop solutions that address specific problems in unique, clearly demonstrable ways. The most successful solutions are those scoped to have the greatest community impact with the smallest technological footprint. Last year’s winner Agrolly is a perfect example, with its mobile application to help small farmers better understand what to plant, based on weather patterns and crop characteristics. In the Call for Code Global Challenge, you can join the fight against climate change by building and deploying open source solutions in the cloud. By participating, you’ll build critical skills for yourself and your teams and deploy solutions to help communities across the globe.


Grand prize winner – $200,000 USD Dispersed equally across the team and solution deployment support

Runners up

First and second – $25,000 USD

Third and fourth – $10,000 USD Global Challenge - All winners will receive an invitation to the Call for Code Global Award Announcement and support from the Linux Foundation. Three global focus areas

According to the United Nations, “The impacts of climate change are global in scope and unprecedented in scale. Without drastic action today, adapting to these impacts in the future will be more difficult and costly.” Given the far-reaching and devastating effects of climate change, we have divided the 2021 Global Challenge into three sub-themes:

  • Clean Water and Sanitation - What is the problem? : Water is the natural resource that is most threatened by climate change and is a prerequisite for life on earth. According to the World Health Organization, 2.2 billion people around the world do not have safely managed drinking water services, 4.2 billion people do not have safely managed sanitation services, and 3 billion people lack basic handwashing facilities. These services are critical in preventing the spread of COVID-19 and other diseases. Even in areas that have these services, there are vast inequalities in the accessibility, availability, and quality of the services. How can technology solve the problem?

  • Zero Hunger - What is the problem?: Approximately 9 percent of the global population is suffering from hunger. And, much of the world’s food is grown by small-scale, independent farms and distributed through local community cooperatives who sell the surplus produce. The co-ops are a central point for quality control, deliveries, and enabling food commodity markets. However, these co-ops face a myriad of logistical challenges to get the right food to the right places with minimal time and cost. How can technology solve the problem?


Submissions will be judged equally across four primary criteria, which evaluate whether the solution solves a real-world problem and uses technology effectively

  • Completeness and transferability - How fully has the idea been implemented? Can it achieve an impact in the field? Can it be transferred elsewhere?

  • Effectiveness and efficiency - Does the solution address a high-priority area? Does it achieve its goal effectively and efficiently? Can it scale?

  • Design and usability- How good is the design, user experience, and ease of use of the solution? How quickly can it be put to use?

  • Creativity and innovation - How unique was the approach to solving a long-standing or previously intractable problem?

Learn More

Please note: If you need to update or replace your submission, please create a new submission. The latest submission from the submitter email address before July 31, 2021, deadline will be considered the final entry. Submit solution

" Lighting the candle of others won’t blow yours out " - Al