TypeTool 3.1.3 for Mac can be downloaded from our website for free. The program lies within System Tools, more precisely Fonts. This software for Mac OS X is a product of FontLab Ltd.
From the developer:
TypeTool is a font editor. It can open and edit fonts with up to 65,000 characters, including TrueType, Type 1, and TrueType-based OpenType fonts. Further, it now has support for 12 encodings and more than 150 codepages. It's the perfect tool for the student, desktop publisher, and occasional typographer.
You may want to check out more software for Mac, such as Fontographer or ScanFont, which might be similar to TypeTool.