Malwarebytes (was AdwareMedic) helps you get your Mac experience back. Malwarebytes scans for and removes code that degrades system performance or attacks your system. Making your Mac once again your Mac. The app can be used for free to clean infected devices, but real-time protection requires an upgrade to the Premium plan, whose pricing info can be found here.

What It Does:

• Removes adware, such as Genieo, VSearch, and Vidx
• Removes malware, including Trojans
• Scans quickly
• Simplifies program management through a clean, lean interface

How It Does It:

• Anti-adware
• Anti-malware
• Light footprint
• Simple interface