“Preview mobile websites, design mockups, and local HTML on Mac or PC.” The preview devices include the iPhone 4, Palm Pre, HTC Evo, Blackberry Storm and more on the way. “Visit any URL or drag and drop local HTML, Flash, or image files”
web_development
List of bookmarklets for mobile debugging
How to build a web widget (using jQuery)
via @garannm
Paper.js
A JavaScript vector graphics framework utilizing HTML5 Canvas. It has “a lot of powerful functionality to create and work with vector graphics and bezier curves, all neatly wrapped up in a well designed, consistent and clean programming interface.”
Rapid Prototyping with flickrBomb
Use Flickr to automatically fill placeholder images in your prototypes
jQuery Waypoints
via @slhernandez Slick. A “small jQuery plugin that makes it easy to execute a function whenever you scroll to an element.”