Other Developer Advent Calendars!

If you know of other 2021 Advent calendars that belongs here, let me know and I'll get them listed here!

πŸŽ„πŸŽ„πŸŽ„Smashing Magazine published a huge round-up of Advent Calendars For Web Designers And Developers (December 2021 Edition)!πŸŽ„πŸŽ„πŸŽ„