via @joemccann
A command line tool “for packaging your CSS & JavaScript projects. It will lint your JavaScript with JSHint, then build and minify your files (if you’d like) with UglifyJS for JavaScript, and Sqwish for CSS.”
performance
Optimizing the asynchronous Google Analytics snippet
via @devinsays
Page Speed Online
“Page Speed Online analyzes the content of a web page, then generates suggestions to make that page faster. “
HTTP Archive
A “permanent repository of web performance information such as size of pages, failed requests, and technologies utilized. This performance information allows us to see trends in how the Web is built and provides a common data set from which to conduct web performance research.”