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An unofficial home for the advent of code community on programming.dev! Other challenges are also welcome!

Advent of Code is an annual 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.

Everybody Codes is another collection of programming puzzles with seasonal events.

EC 2025

AoC 2025

Solution Threads

M	T	W	T	F	S	S
1	2	3	4	5	6	7
8	9	10	11	12

Visualisations Megathread

Rules/Guidelines

Follow the programming.dev instance rules
Keep all content related to advent of code in some way
If what youre posting relates to a day, put in brackets the year and then day number in front of the post title (e.g. [2024 Day 10])
When an event is running, keep solutions in the solution megathread to avoid the community getting spammed with posts

Relevant Communities

Relevant Links

Advent of Code Homepage

Credits

Icon base by Lorc under CC BY 3.0 with modifications to add a gradient

console.log('Hello World')

Visibility: Public

This community can be federated to other instances and be posted/commented in by their users.

1 user / day
1 user / week
4 users / month
318 users / 6 months
8 local subscribers
1.22K subscribers
184 Posts
2.35K Comments
Modlog

programming.dev

A collection of programming communities

Welcome Programmers!

programming.dev is a collection of programming communities and other topics relevant to software engineers, hackers, roboticists, hardware and software enthusiasts, and more.

The site is primarily english with some communities in other languages. We are connected to many other sites using the activitypub protocol that you can view posts from in the “all” tab while the “local” tab shows posts on our site.

🔗 Site with links to all relevant programming.dev sites

🟩 Not a fan of the default UI? We have alternate frontends we host that you can view the same content from

ℹ️ We have a wiki site that communities can host documents on

⚖️ All users are expected to follow our Code of Conduct and the other various documents on our legal site

🏘️ Want to create a new community? Please follow our Community Guidelines

❤️ The site is run by a team of volunteers. If youre interested in donating to help fund things such as server costs you can do so here

💬 We have a microblog site aimed towards programmers available at https://bytes.programming.dev/

🛠️ We have a forgejo instance for hosting git repositories relating to our site and the fediverse. If you have a project that relates and follows our Code of Conduct feel free to host it there and if you have ideas for things to improve our sites feel free to create issues in the relevant repositories. To go along with the instance we also have a site for sharing small code snippets that might be too small for their own repository.

🌲 We have a discord server and a matrix space for chatting with other members of the community. These are bridged to each other (so you can interact with people using matrix from discord and vice versa.

Fediseer