Developer, using primarily OpenSource technologies.

Short list of known/used stuff

• Operating systems: Linux (Gentoo, Debian, Fedora, Ubuntu)
• Programming languages: Python, PHP, JavaScript, Bash, (some) C/C++, (a bit of) Java
• Frameworks and CMS: Drupal (PHP), Django (Python), web2py (Python), jQuery (JavaScript), SQLAlchemy (Python)
• Web development languages: HTML, CSS
• Databases: MySQL, PostgreSQL, SQLite, MongoDB, OpenLDAP
• Geographical systems: MapServer, MapScript (with Python, PHP), PostGIS
• Standard Linux/Posix tools: sed, grep, awk, ...
• Version control systems: git, svn, (sometimes used) cvs
• Professional IDEs: eclipse, emacs
• Some sysadmin skill: Apache, MySQL, Bind, Postfix, Bacula, .. but that's not my primary job
• Also, I'm doing some electronics experiments with arduino and similar stuff..