Raku (Perl 6)

Raku (Perl 6) Advent Calendar

Raku Advent: December 11, 2019 - Raku Advent Calendar

Perl

Perl Advent Calendar

Perl Advent: Perl Advent Calendar 2019 - Now With Added Interactivity

Perl Dancer Advent Calendar

Dancer Advent: PerlDancer Advent Calendar

Perl Weekly Challenge Advent Calendar

Perl Weekly Challenge: Advent Calendar - December 11, 2019

Go

Gopher Academy

Go Advent: Advent 2019 - Gopher Academy Blog

Ruby

Qiita: Ruby

Qiita Ruby Advent 2019: Ruby Advent Calendar 2019 - Qiita

Qiita: Ruby on Rails

Qiita Ruby on Rails Advent 2019: Ruby on Rails Advent Calendar 2019 - Qiita

Java

JVM Advent

JVM Advent:: 2019 - JVM Advent

Java Security Advent Calendar

Java Security Advent: Clean Code - Developer First - Sonar

Miscellaneous

SysAdvent

SysAdvent: sysadvent

24Ways Advent

24 Ways to impress your friends: Articles from advent 2019 * 24 ways

24 Accessibitly

24 Days of digital accessibility gifts during the season of giving and sharing: 2019 - 24 Accessibility

Performance Calendar

Performance Planet: Web Performance Calendar -- 2019

Lean UXmas

Lean UXmas: Lean UXmas 2019

Advent of Code

Advent of Code: Day 11 - Advent of Code 2019

Wordpress Snippets

Wordpress Snippets til Christmas: WP snippets til Christmas - WordPress advent calendar just for fun!

Andrew Shitov's Blog: A Language a Day Advent Calendar

Andrew Shitov's Blog: December 11, 2019 - Andrew Shitov

Plus Magazine (Math)

Plus Magazine Advent: The Plus advent calendar 2019 - plus.maths.org

Old English Advent

The Dictionary of Old English: Advent Calendar - The Dictionary of Old English