- 24 Ways
24 ways is the advent calendar for web geeks. - 24 Accessibility
24 days of digital accessibility gifts during the season of giving and sharing - Performance Calendar The speed geek's favorite time of the year
- Advent of Code
An Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like - UXmas An advent calendar for UX folk
- 24 Pull Request Giving back to open source for the holidays