The Complete CSS Demo for OpenType Features - OpenType Features in CSS
Every single font-feature-settings value demonstrated in one single page.
Link tags: opentype
3
FontDrop!
A handy browser-based tool for examining font files to see which features they support.
Using OpenType font features with CSS 3: Part 1 | Fontdeck Blog
Richard starts diving into some the nifty ligatures that are becoming available to us in OpenType fonts with CSS3.