Deeper is a personalization utility for OS X which you can use to enable and disable the hidden functions of the Finder, Dock, Safari, iTunes, login window, and many of Apple’s applications, and more.
Deeper version 2.1.1
• Parameters > Dock pane improved
• New option: Show/hide the Dock
• Panes rearranged
• Integrated new version of Network Link Conditioner
Deeper version 2.1.0
• New version for El Capitan only
Free and powerful, Deeper is an impressive Tweaking tool.