This free software for Mac OS X was originally designed by VoJou Software. The application lies within System Tools, more precisely Fonts.
From the developer:
X Font Info is a simple font utility for Mac OS X. The application displays the content of any Mac OS X Font file. Therefore, you have the chance to see at a glance if the Font file you picked up contains the special fonts and characters you are looking for.
You may want to check out more Mac applications, such as Font Studio, Find my Font-free or Font Catalog Creator, which might be related to X Font Info.
System Optimization
General