Some things I've worked with

Backend Languages

Primary is PHP. Some experience with Python, Node.js, ASP, ASP.Net.

Frontend Languages

Primary are JavaScript and SASS/LESS.

Markup Languages

Primary are HTML, CSS, Markdown, and YAML. Some experience with XML, reStructuredText, MathML, KML, DocBook, Scorm.

Frameworks

Primary are Laravel, Twitter Bootstrap, Zurb Foundation. Some experience with Flask, Django, Express, Phalcon, Symfony.

Servers

Primary are CentOS and Ubuntu. Some experience with Debian (and variants), openSuse, Slackware.