You could have downloaded KeyFixer 0.5 for Mac from our application library for free. KeyFixer for Mac belongs to Theming Tools. The actual developer of this free software for Mac is Matthew Ball. The unique ID for this program's bundle is org.jim.KeyFixer. The most popular version among the application users is 0.5.
From the developer:
Keyfixer is a Mozilla Extension (a type of add-on) that changes the key bindings for Mac OS X users to behave like Windows key bindings. For example, Home/End move the cursor to the beginning/end of the current line instead of the top/bottom of the window.
You may want to check out more Mac applications, such as Iconographer X, Desktop Wrap or LeopardDocks, which might be related to KeyFixer.