Font Awesome: <a href="http://fortawesome.github.com/Font-Awesome/" rel="nofollow">http://fortawesome.github.com/Font-Awesome/</a><p>Although, if you're looking at icon fonts, you'll probably want to look at one of these two resources:<p>IcoMoon: <a href="http://icomoon.io/" rel="nofollow">http://icomoon.io/</a><p>Fontello: <a href="http://fontello.com/" rel="nofollow">http://fontello.com/</a>
What problems are you having with FF and IE?<p>As for alternatives, there’s the font version of Pictos (<a href="http://pictos.cc/font/" rel="nofollow">http://pictos.cc/font/</a>) and you can export your own icons into a font format using Font Custom (<a href="http://fontcustom.com" rel="nofollow">http://fontcustom.com</a>)