I love to create open-source projects to scratch my own itch and try to keep all non-proprietary code freely available. I have almost a hundred repositories on GitHub and have been active since 2011.
Precis is a free and open-source URL shortener which uses PHP and MySQL. It has an admin panel with a RESTful API and collects analytics such as useragent with each click. It works across multiple domains and is super easy to setup.
One Grid is the simplest grid system for fixed-height infinite blocks in less than one kilobyte. It’s responsive, eliminates unnecessary code, and works with Internet Explorer 8+. One is the most fundamental form of what I believe a grid system should work like.
Aptitude is a super-simple theme for one-page articles and projects. It’s the next version of essential.css and comes with support for better navigation, icons, and fonts from Typekit. It was created for a page on my website, Timeless, something I maintain until today.
essential.css is a beautiful article template in 786 bytes. Just include the stylesheet link to your webpage and quickly create simple, readable webpages. I made essential.css as a tool to build my personal website and open-sourced it.