FontForge - Free (libre) font editor for Windows, Mac OS X and GNU+Linux
Checkeeper - *Have your own check stock? Awesome, Checkeeper will work with virtually any type!
FontCreator - This professional font editor allows you to create and edit TrueType and OpenType fonts.
Printboss - PrintBoss: Check Printing Software & Solutions
Glyphs - Make everything from dingbat webfonts to full-fledged text typefaces in the most Mac-like font...
Online Check Writer - Online Check Writer is an all-in-one financial service provider with all kinds of payment options to pay and get paid.