CCleaner, from by Piriform, and written in c++ and a utility program designed for windows
It is used to clean unwanted files and invalid Registry entries to optimize your computer's performance.
If your concerned about your privacy this tool can also clean web browser data and tracking files left over when you use your computer. Its very Light only around 10Mb. Unlike other utility software its strait forward no cryptic options.
There are paid version of their software but only when you need their extra features. the free version works well as the paid ones. One thing I like about this cleaner is that they don't force ads or install another software and best of all it constantly gets updated.
Download link - https://www.piriform.com/ccleaner/download
