I use Ubuntu Linux, Mac OS X, Windows, MS-DOS, Bash, Powershell, regular expressions, Wine, Vim, Tomcat, Jenkins, Git, Gitolite, Subversion, TFS, Perforce, Visual Studio, Xcode, Eclipse, IntelliJ IDEA, SSH, Objective-C, Java, MSBuild, Ant, C#, Perl, PowerGREP, TextEdit Pro, Tower, Versions, Xyplorer, Process Explorer, Klocwork, Clang, VMware, Beyond Compare, Inkscape, Pixelmator, Acorn, Steam, Origin, Chocolat, Bartender, iPhoto, BetterSnapTool, Synergy, Apache, Nginx, WordPress, RapidWeaver, and lots of other stuff.