Free CSS templates

http://www.freecsstemplates.org/

Easy Tooltip - jQuery plugin

By default this plugin will read the title attribute of the element and convert it into fade-in tooltip that you can style any way you want. Important note, it doesn't have to be an anchor tag. You can apply this script to any element(s) you want.
The one big thing that makes this different from my first version is that you are now allowed to put custom content, any html content you want - images, long paragraphs, link lists... anything. If you hate writing HTML code inside a JavaScript variable, this plugin allows you to use inner HTML from any element on the page. It means that you can write HTML directly on the page, as you normally do, hide that element with CSS and have it appear as a tooltip on mouse over. Take a look at the demos for more info.

960 Grid System

http://960.gs/ - The 960 Grid System is an effort to streamline web development workflow by providing commonly used dimensions, based on a width of 960 pixels. There are two variants: 12 and 16 columns, which can be used separately or in tandem.

Scalable Vector Graphics - SVG

W3C Recommendation:
http://www.w3.org/TR/SVG/
http://www.w3.org/Graphics/SVG/

Intro:
http://www.xul.fr/en-xml-svg.html

Tutorial:
http://www.w3schools.com/svg/default.asp