sIFR : sIFR is meant to replace short passages of plain browser text with text rendered in your typeface of choice, regardless of whether or not your users h...
Fontdeck : Fontdeck is standards compliant, accessible and uses a pure CSS @font-face solution. No JavaScript required.
HyperTerm : A terminal built on web technologies : JS / HTML / CSS
css3-mediaqueries-js : make CSS3 Media Queries work in all browsers (JavaScript library)
Cufón aims to become a worthy alternative to sIFR, which despite its merits still remains painfully tricky to set up and use.