I started off in the 1980s by learning Atari, Microsoft, and BBC DOS and BASIC systems. In the 1990s, I got into the Amiga and eventually Windows 3.0. Courses in programming taught me the basics of assembly, Pascal, COBOL, C, Prolog, LISP, SQL, TCP/IP, Unix, networking, and mainframe system.
In the years since, I've worked on all kinds of systems, including (but not limited to) Unixes (Solaris, Mac, BSD), Windows, Linuxes (Fedora, Ubuntu), and worked on a variety of Ant, Bash, C++, C#, Erlang, Java, PowerShell, Python, Perl, Java, Python, and other projects.
My current preferences lean towards Git over Subversion, IntelliJ IDEA over Eclipse, Fish over Bash, vi over emacs, Postgres over MySQL, Maven and Ant over Make, VMware over Parallels or VirtualBox, OS X or BSD over Linux and Windows, Nginx over Apache, Pixelmator and iDraw over Photoshop and Illustrator, PathFinder over Finder, PowerGREP over grep, folders over iPhoto and iTunes, BeyondCompare over Kaleidoscope, colour over color. And so on.
Q&A for professional and enthusiast programmers
Q&A for computer enthusiasts and power users
Q&A for Ubuntu users and developers
Q&A for passionate videogamers on all platforms
Q&A for power users of Apple hardware and software
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Q&A for users and developers of hardware and software for Raspberry Pi
Q&A for professional system and network administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Q&A for user experience researchers and experts
Q&A for WordPress developers and administrators
Q&A for software quality control experts, automation engineers, and software testers
Q&A for people interested in improving and participating in the patent system