Computer languages: C, C++, C#, Java, Object Pascal, Delphi, UNIX shell (sh, bash, ksh, zsh), Assembler, JSP, PHP, JavaScript, HTML, XML, SQL languages

Environments and Systems: MS Visual C++, Borland C++ Builder, BDE, TASM, Borland Delphi, Borland Java Builder, Oracle Developer, DHTML, MS-Windows API, OLE, ActiveX, Microsoft .Net.

Technologies: Win32 API's, MFC, ADO, ASPX, VCL, OWL, BDE, J2ME, POSIX threads, System V synchronization objects, Windows threads and synchronization objects, Servlets, GNOME/GTK+, TCP/IP, BSD sockets, WinSock, ODBC, HTTP, PHP.

Databases: MySQL, ORACLE, MS SQL server, INTERBASE, Access

Operating systems: MS Windows 3.x/9x/NT/2000/XP, Linux RedHat