OS's: Android, iOS, Windows, Mac OS

Languages: HTML5, CSS/CSS 3, JavaScript, PHP, Ruby on Rails, Groovy, Objective-C, Java,C/C++, XML

Databases: MySQL, Oracle, PostgreSQL, Mongo, JackRabbit

Development frameworks: jQuery, jQuery mobile, jQuery UI, BackBone, Zend, Symphony, Smarty, Spring, Grails, Velocity, Cactus, EJB, JMS, JPA, JSF, Tapestry, Scala, Seam, Perl, Rails, Sinatra

Technologies: AJAX, iPhone SDK, Cocoa Touch, Android SDK, Android Native Development Kit (NDK), Android DT (ADT)

Development platforms: Java SE/EE, LAMP PHP/MySQL, Rails, Grails

Applications and web servers: Apache, JBoss, TomCat, Oracle, Mongrel, Jetty, GlassFish