8 tips for running a virtual hackathon: 
Hackathons are events where developers, product managers, designers, and others come together to tackle problems over a short time period. They have become increasingly popular over the last 15 years after OpenBSD ran the first hackathon in June 1999.
These events provide several benefits—greater engagement across the community, innovation and new ideas, awareness for the organizers, and networking opportunities for participants.
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Have you tried: Sailing in Africa ?