Operating System: UNIX, Windows 95, 98, NT, ME, XP and NT , MS-DOS, Solaris, Linux, FreeBSD.
Network Technology: TCP/IP, UDP, RMI, CORBA, Client/Server(Java), maintaining server-based application.
Web Technology: JSP/Servlets, Java Script, JDK/JDBC/J2EE/EJB, PHP, ASP, HTML/DHTML/XML/CSS.
Application Software: Weblogic, JBoss, Apache/Tomcat, Resin, JRun, IIS.
Programming Lang: Java, C/C++, VB, PHP, C#.
Database: SQLServer, DB2, Microsoft Access, Oracle, Mysql, Sybase.