Kirby CMS
Kirby is a file-based CMS, which is very easy to setup and use and yet very flexible.
Kirby Toolkit
The core of the Kirby CMS and Zootool is my Kirby Toolkit. It's a handy collection of PHP methods that make your life as a PHP developer easier. It's open-source.
PHP Browser Selector
Based on a javascript by Rafael Lima I've created a PHP script which adds browser and os selectors to your html element of choice. This makes it possible to write browser and os specific css code.
A newer version of that code can be found in kirby, so you should check out that instead.
Things
I'm always playing around with new stuff and techniques and so one day I decided to build Things for Mac (which is a great app by the way) with HTML 5 and CSS3. It does not make sense at all, but it's good to see what's possible with a webkit browser and some simple web techniques.