- Programming Languages: C/C++03/C++11, Java, XML+XSD+XSLT+XPath,SQL+PL/SQL, Python 3.X, Javascript
- Frameworks, libraries, API: MFC,ATL,Win32,COM,GDI/GDI+,STL,Boost,QT,OpenCV,DirectShow,Swing, Node.JS/Express
- Protocols: SNMP, FTP, TFTP, NetFlow, syslog, HTTP, POP3+SMTP, WMI
- Operating Systems: Windows, Linux, Solaris, MS DOS
- Databases: Oracle, MySQL, Microsoft SQL Server, Sybase, MongoDb
- IDE: Visual Studio, Eclipse, QT Creator, WebStorm, PyCharm