FontBase is and always will be free. You can easily download the installation package for Mac here: fontba.se/downloads/mac and for Windows here: fontba.se/downloads/windows
We use a single-step straightforward installer, so you don't need to make hard choices and click a lot of buttons during installation. Simply run the installer and when FontBase finishes installation it will launch automatically. The default installation path for Mac is in the Apps directory and for Windows it's C:/Users/USERNAME/AppData/Local/Programs/FontBase. All the local user data is saved at ~/Library/Application Support/FontBase or ~/Application Support/FontBase on Mac and C:/Users/USERNAME/AppData/Roaming/FontBase on Windows. If you want to reset FontBase to its default state, you can simply delete the directory with the local data. Please note, that you will lose all your collections and settings if you do so.