2009-12-20
Perl
Perl: appears to be unavailable on 2009-12-20 - Perl: 404 - Not Found
Catalyst: Catalyst Advent Calendar - Day 20
Plack: Plack Advent Calendar: December 2009
Perl 6: 20 - December - 2009 - Perl 6 Advent Calendar
Ricardo Signes: RJBS Advent Calendar 2009 - ...aka Config::RJBS::AndNobodyElse::KnowsWTFItDoes
Perl Advent Calendar Japan:
Casual: Acme::Oppaiで作る癒し系エイリアス - JPerl Advent Calendar 2009
Hacker: Windows環境でUnicodeファイルを扱う - JPerl Advent Calendar 2009
dbix-skinny: Schemaファイルのメンテナンスについて #20 - JPerl Advent Calendar 2009
data-model: トランザクションについて - JPerl Advent Calendar 2009
PHP
Changed its name to WebAdvent in 2012: PHPadvent
SysAdvent
Advent Calendar for System Administrators home page: SysAdvent
Plone (Japan)
Plone User Group Japan: Plone Advent
Performance Calendar
Performance Planet: Performance Calendar » 2009