+ * **Operating systems**: Linux (Red Hat, Fedora, Ubuntu, SuSE, Debian, uClinux), Mac OS X, Solaris (versions 6 to 9),
+ NetBSD, AmigaOS, Windows.
+ * **Frameworks and APIs**: POSIX, Qt, Gtk, STL, Boost, WIN32, MFC.
+ * **Programming Techniques**: OOP, generic programming, metaprogramming, real-time, event-driven, multithreading.
+ * **Development Tools**: GCC toolchain, GNU make, auto-tools, MSVC, XCode, Codewarrior, IAR, Code Composer Studio, BSO Tasking.
+ * **Revision Control**: Git, Subversion, CVS, RCS, Rational Clearcase, Source Safe.