A modern, HTML5-ready alternative to CSS resets. Make browsers render all elements more consistently. Normalize.css makes browsers render all elements more consistently and in line with modern standards. It precisely targets only the styles that need normalizing.
compile Compass/Sass easily without resorting to command line interface — Compass.app helps designers compile stylesheets easily without resorting to command line interface. It is written in Java and works in Windows/Linux/Mac OS X.
… is a stylesheet authoring framework that makes your stylesheets and markup easier to build and maintain. With compass, you write your stylesheets in Sass instead of CSS.
is a set of 434 (and growing) web and application icons inspired by advertising clip art of the 1920′s and 1930′s. The set is available in vector format and also includes a CSS/PNG sprite version. → GPL Licensed Version (download) : http://iconify.it/?file_id=9
This website and its sample code creates a template of sorts, absent of design or layout, that will help you avoid some of the major rendering problems with the most common email clients out there — Gmail, Outlook, Yahoo Mail, etc. While not plug and play (you know, you'll have to do some work ;-), it will provide some helpful examples and snippets that will keep your email design rendering as true-to-form as possible.
… a Beautiful Boilerplate for Responsive, Mobile-Friendly Development […] a small collection of CSS & JS files that can help you rapidly develop sites that look beautiful at any size, be it a 17" laptop screen or an iPhone.
Typesetter & Font Viewer for iOS - Simple, colorful typesetter and font viewer for iOS. Render beautiful custom text with the built-in system fonts. Upgrade to use your own custom fonts.
a bookmarklet for typographically obsessed web designers. It enables rapid checking of fonts and font styles directly in the browser without editing code and refreshing pages. 2.0’s killer feature is instant drag-and-drop font previewing right in the browser (Firefox 3.6+ only), in any document you’re currently viewing.