Due to low demand/priority these are likely not in Modernizr, but they are available for exploring.
- [[font smoothing |http://www.useragentman.com/blog/2009/11/29/how-to-detect-font-smoothing-using-javascript/]], [[font-smoothing css prop |http://github.com/Modernizr/Modernizr/pull/114]]
- mp3 play detection via data uri [[http://gist.github.com/253174]]
- boxshadow inset and spread: [[http://pastie.org/967149]]
- :target selector support (and all other selectors) [[http://gist.github.com/441842]]
- [[matchMedia|https://gist.github.com/1192923]] & [[MediaQueryListener|https://gist.github.com/1192960]]
- min-device-pixel-ratio media query [[http://pastie.org/1034786]] (easy to rewrite with
Modernizr.mq) - [[iOS5 scrolling|https://gist.github.com/1292309]] Indirect test for one-finger scrolling on iOS 5
- [[text-stroke css prop|http://github.com/Modernizr/Modernizr/issues#issue/116]]
- [[iOS webapp mode|http://github.com/Modernizr/Modernizr/issues/#issue/88]]
- [[attr modified mutation event |http://github.com/Modernizr/Modernizr/issues/#issue/45/]]
- [[volume control|https://gist.github.com/1044377]] (iOS devices volume can't be controlled)