Hacktoberfest, a programming event hosted by Twilio at Citizen Space co-working space, featured various coding challenges for participants to showcase their skills in languages such as Python, Ruby, and Go. The competition included Hacker Jeopardy, FizzBuzz, and generating the lyrics of "99 bottles of beer on the wall." The winner of each challenge received a prize, with the final challenge winner claiming a beer brewing kit. The event aimed to bring together developers and foster a sense of community, as described by one participant, Zephyr.