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http://habrahabr.ru/blogs/perl/69890/#habracut example on how to work with async sockets in perl using AnyEvent module

http://habrahabr.ru/blogs/php/69616/#habracut how to generate open office document in PHP

http://karesansui-project.info/wiki/karesansui/En_tutorial web management for XEN, including installing, monitoring and console. Based on libvirt, written in python, ,uses JQuery for interface, tightvnc-java for console, SQLite [default], MySQL, PostgreSQL as database.

http://forum.nginx.org/read.php?2,1008,page=1 post on nginx forum that provides some insights about central logging / log collections

http://www.xuheki.com/ new ajax imap webmail client

http://wiki.codemongers.com/Main main source of Nginx info in English. Documentation, config examples, code cross-reference info.

http://boombick.org/blog/posts/48 [RUSSIAN] How to configure Perlball + Heartbeat as HA load balancer with session support for app servers

http://www.mysqlperformanceblog.com/2006/08/09/cache-performance-comparison/ gives you an idea how different caching methods perform. Read it before implementing something

http://softwaremaniacs.org/soft/highlight/en/ very good code javascript code highlighting library, easy to implement, comes with wordpress plugin as well.

http://wua.la/ social everything, now it’s social online file sharing