Perl Official Perl Perl 6 Catalyst Dancer 24 Perl Modules Seoul Perl Mongers Clojure Clojure Advent Calendar in Japanese Java Java Advent Java in Japanese PHP PHP in Japanese MS F# System Administration SYSADVENT QEMU Disk Image Every Day Docker in Japanese Computer Science IEEE Advent Problems Contest Quines! in Japanese Web Design 24Ways UXMas Open Source/Make Community 24 Pull Requests I Can Make Emacs Emacs in Japanese Git Git in Japanese Calender Lists Advent Planet Giant List of Japanese Language Advent Calendars Unbelievable variety of topics Another Huge List of Japanese Language Advent Calendars Many different technical topics, including: Quines, OpenStack, Powershell and Latex Deals Manning Publications