The Most Popular Programming Languages at Hackathons
DevPost, which used to be known as ChallengePost, provides a tool that is used in the infrastructure for most hackathons. As part of the announcement about its name change, the company has released a report on the most popular programming languages and other tools used by developers at events. The top languages list (which includes some entries that aren't really programming languages) is as follows:
The link below also provides information about the most popular APIs and platforms at hackathons.