Webfest 2021

Author: Andrew Purcell

The 2021 CERN Webfest took place on the weekend of 21-22 August. The Webfest is CERN’s annual hackathon based on open web technologies. 300 people signed up for this year’s event, which was held online for only the second time. The participants — from 63 countries spread across the globe — formed into small teams and used their combined skills and knowledge to develop innovative prototype apps, hardware, and other tools.


People joined the hackathon from 63 countries across the globe.
People joined the hackathon from 63 countries across the globe.





The theme for this year’s Webfest was “science, society, sustainability”, with participants encouraged to work on projects that address certain UN Sustainable Development Goals.



These SDG are as follows:














Projects facilitating online science collaboration - thus reducing the need for frequent international travel - were also strongly encouraged. This picked up on the theme of last year's Webfest and is in line with SDG:




SDG climate action




The goal was for CERN Webfest to serve as an exemplar for how people can come together virtually - from all corners of the globe - to collaborate successfully, without the need for long-distance travel with a large CO2 footprint. Other environment-focused projects were encouraged at the Webfest too, in support of CERN's Year of Environmental Awareness.

In line with these Sustainable Development Goals, teams at the Webfest created an application to warn of wildfires, a concealed alarm system for victims of domestic violence, a directory for online learning materials, a website providing clear and accurate information about nuclear energy, a health app that identifies nutrient deficiencies, an AI system to aid with studying, and much more. Information on all 22 innovative projects can be found here.

“Focusing on the Sustainable Development Goals, the participants in this year’s CERN Webfest showed a great commitment to using their skills to improve our world,” says Charlotte Warakaulle, Director for International Relations at CERN. “Their creativity and innovation has not only generated new practical solutions to societal challenges, but has also inspired new ways of working together.” Warakaulle, who was one of the judges at this year’s event, continues: “The wealth of ideas presented has great potential to make a real difference in peoples’ lives. Congratulations to all of the participants for this achievement!” 

Each year, one project is selected as the overall Webfest winner. The eight judges at this year’s event selected a project that uses crowdsourced designs and 3D printing to create tools for disabled people. In particular, these tools are aimed at helping people with conditions like ectrodactyly and syndactyly (malformations of the hand) to use everyday objects. During the Webfest, the team was able to create a prototype attachment that helps those with these conditions to pick up drinking bottles.

Watch the Webfest’s closing ceremony to find out more about the event.

"For me, the Webfest was more than a hackathon; it was a portal for meeting new people from various backgrounds and learning about their journeys,” says Komal Kedarnath, a mechanical engineering student from India and a member of the winning team. “This kind of collaboration naturally fosters innovation and elicits creativity. I had the best time during the networking sessions, where I talked to people from 10 different time zones about how they got here. It was amazing!” 

In addition to these networking sessions, the Webfest offered a fun CERN-themed quiz, an online exercise session, and several how-to workshops focused on practical skills, such as how to give good presentations and how to create short videos. This diverse programme was made possible thanks to the Webfest’s supporters: CERN openlab, gluoNNet, RemotelyGreen, Veertly, Citizen Cyberlab, Crowd4SDG, THE Port, CERN Alumni, Quantum FutureX, AI Crowd and CERN Fitness Club.

"Sharing ideas with other participants during the Webfest really helped us to improve the way we approach our project,” says Diego Lopez Yse a data science student in Argentina. “Through exchanging views and experiences, we were able to come up with new ways to solve our challenge, while also helping others with their projects.” He continues: “I highly recommend participating in the Webfest: you meet incredibly talented people who can help you grow and expand your vision."

Given the global interest once again shown, the orgasnisers plan to run the hackathon online again next year.

“We’ve come a long way since 2012 when Francois Grey and I founded the Webfest as CERN’s very first hackathon,” says Ben Segal, CERN honorary staff member and member of the Internet Hall of Fame. “Taking the Webfest online has added a lot, bringing us closer to massive amounts of talent spread all over the Internet.”

Webfest has been such a unique experience not only for the participants, but also for us -the organisers- and we would like to deeply thank each and every one of you for participating and making another exciting edition of the CERN Webfest happen! We would also like to express our gratitude to all our mentors, partners and our jury members for dedicating themselves in each way possible during the Webfest weekend.

Our panel of judges:

  • Charlotte Lindberg Warakaulle - CERN, Director for International Relations.
  • Ben Segal - CERN, Honorary staff member. 
  • Jean-Pierre Reymond - Permanent Mission of Switzerland to UN, Head of Innovation partnerships. 
  • Ines Knaepper - World Economic Forum - GATF, innovation and Hackathon Lead. 
  • Francois Grey - University of Geneva, Director of the Geneva Tsinghua Initiative. 
  • Archana Sharma - Senior scientist at CERN
  • Bilge Demirkoez - Middlle East Technical University (METU), Professor of high energy physics. 
  • Mateusz Malenta, Software engineer working on astrophysics computing projects at The University of Manchester

Our 7 highlights:

Our overall winner:


It's inspiring to see you accomplishing such great things in just a weekend! Warmest congratulations on your achievements!

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