- Google Device Metrics
- Protoship Sketch plugin
- Craft plugin for Sketch and Photoshop
- SVG Icon Systems
- Learning CSS The Pedantic Way
- Campaign Monitor, Email, and Dog Food
- The Very Latest Clearfix Reloaded
More Art than you should ever need.
Very nice. Jens Meiert has a “continuously updated list of all CSS properties.” Quite a list, with CSS version for each entry (no mention of browser support, though).