Typebutter
Typebutter comes with preset options for a few typefaces, Helvetica, Arial, Verdana, Times and Georgia but also gives you the option to Roll your own, setting custom kerning for any pairing set of characters.
TypeButter allows you to set optical kerning for any font on your website. If you’re longing for beautifully laid out text that today’s browsers just don’t provide, this is the plugin for you!
A great tool from David Hudson and Joel Richardson.