Languages C#, Java, C/C++, Ruby, Python, Lisp, XML, SQL, JavaScript, HTML, Visual Basic, JSP, PHP, TCL/TK, PERL, 80X86 Assembler
Operating Systems Unix/Linux, Windows (9X, 2003, NT, 2000, XP, Vista, Win7), MS-DOS, OSX, Genera
Databases SQL Server, Oracle, MySQL, Informix, Access, dBase III/IV, PostgreSQL
Tools/kits/APIs Virtual Server, VirtualPC, ASP.Net, ADO.Net, Rail, Gem, Rake, Make, configure, JSP, Swing/JFC, JDBC, STL, OpenGL, X, Emacs, CLOS, Yacc, JavaCC
Communications,Networking XML Web Services, SOAP, WSDL, REST, Berkeley sockets, Internet Protocols (IP), DCE-RPC
Robotics, Embedded Systems Arduino, Android, AVR, Handyboard, Xbee, USB, RS-232, misc sensors (temp, proximity, motion, etc), QOS scheduling, interrupt handlers, kernel development, device drivers