You could have downloaded OpenFinder 1.1.0 for Mac from our application library for free. This free software for Mac OS X was originally created by Kalle Persson. The software lies within System Tools, more precisely File Managers.
From the developer:
OpenFinder Provides a command for opening Finder in the current directory. When installed, provides the “Finder: Open here” command, which opens Finder in the current file's folder, much like The Sublime Terminal plugin. After unziping, rename it to “Sublime-Finder” or something so you can use it.
You may want to check out more Mac applications, such as eps2pdf, Little Disc+ 3 Trial or Files Renamer, which might be similar to OpenFinder.