FontPrep 3.1.1 for Mac is available as a free download on our software library. The program is included in System Tools. This free Mac app was originally created by Brian & Matthew Gonzalez.
From the developer:
FontPrep is a missing font generator for Mac OS X. The app takes your TTF and OTF font files and generates all of the respective font-formats for the web: WOFF, EOT, and SVG. The app allows you to take a font with thousands of characters and create a font with 1, 10, 67, 100, or however many glyphs you need.
You may want to check out more software for Mac, such as fontplop, which might be related to FontPrep.