You could have downloaded System Optimizer X 4.7 for Mac from our application library for free. The software lies within System Tools, more precisely System Optimization.
From the developer:
System Optimizer X is a powerful system maintenance and optimization tool, with a uniquely simple design. System Optimizer X uses built-in system tools, and applies proven system-level tweaks and modifications to improve your system, internet, and disk speed and stability.
You may want to check out more software for Mac, such as TinkerTool System, System-i DBcompare Lite or phone.systems, which might be similar to System Optimizer X.
System Optimization
System Optimization