- * **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
+ * **Development Tools**: GCC toolchain (contributor), MSVC, XCode, Codewarrior, IAR, Code Composer Studio, BSO Tasking
+ * **Version Control**: Git, Subversion, CVS, Rational Clearcase, Source Safe
+
+ * **Systems administration**: XEN, KVM, Libvirt, Puppet, Nagios, Munin
+ * **Server software**: BIND, DHCP, Exim, Qmail, Postfix, Apache, MySQL, PostgreSQL, Asterisk
+ * **Networking**: TCP/IP, IPv6, DNSSEC, BGP routing