Multifunction maintenance, optimisation and cleaning utility
Created by Titanium Software
Onyx is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The most popular Windows alternative is CCleaner, which is free. If that doesn't suit you, our users have ranked 34 alternatives to Onyx and many of them are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to Onyx are AVG PC TuneUp (Paid), Click&Clean (Free), jv16 PowerTools (Paid) and CCleaner Cloud (Paid).