Fitty is a javascript library that scales up (or down) text so it fits perfectly to its parent container. Ideal for flexible and responsive websites.
jQuery WebFonts extension adds font embedding capability to jquery using the WebFonts technology. The extension provides a flexible way to choose font from a font repository and apply on html elements.
FlowType.JS is a plugin for Responsive Web Typography at its finest: font-size and line-height based on element width.
FlowType.JS is changing the font-size—and subsequently the line-height based on a specific element's width. This allows for a perfect character count per line at any screen width.
FlowType.JS works just fine with Typekit, Cloud.Typography, Google Webfonts and any other services.