Perl

Perl Advent Calendar

Perl Advent: appears to be unavailable on 2025-12-25. Please try again later.

Perl Weekly Challenge

Perl Weekly Challenge: is available 12/01-12/24

Qiita Perl Advent Calendar

Qiita Perl Advent: Perl - Qiita Advent Calendar 2025 - Qiita

Raku

Raku Advent Calendar

Raku Advent: December 25, 2025 - Raku Advent Calendar

HTML

HTML Hell: Abbreviations done right: The <abbr> element and why not use it - HTMHell

CSS

CSS Advent Calendar: CSS Advent Calendar 2025

JavaScript

AdventJS: AdventJS - Reto #25: Execute the magical language - JavaScript, TypeScript, Python

PHP

Laravel: Advent Calendar 2025 - Laravel - The PHP Framework For Web Artisans

Java

JVM Advent: 2025 - JVM Advent

C#

C#: C# Advent 2025

F#

F# Advent: F# Advent Calendar in English 2025 - Sergey Tihon's Blog

Miscellaneous

Performance Calendar

Performance Planet: 2025 - Web Performance Calendar

Advent of Code

Advent of Code: appears to be unavailable on 2025-12-25. Please try again later.

Steam Games Advent Calendar

Steam: Save 33% on Winter Games Collection + Advent Calendar on Steam

Festive Tech Calendar

Festive Tech Calendar: Festive Tech Calendar 2025

24 Pull Requests

24 Pull Requests: Home - 24 Pull Requests

Space Telescope Advent Calendar (The Atlantic)

Space Telescope Advent Calendar (The Atlantic): 2025 Space Telescope Advent Calendar - The Atlantic

SANS Holiday Hack Challenge

SANS Holiday Hack Challenge 2025: Holiday Hack Cybersecurity Challenge 2025 - SANS Institute

Debug December

Debug December: Debug December

Advent of Craft

Advent Of Craft: 2025/challenges/day25 at main advent-of-craft/2025 · GitHub