System Ninja

System Ninja 2.3

An efficient junk file cleaner and system optimizer at your disposal
3.7  (17 votes)

Junk files piling up, unnecessary programs in your Windows startup list, unwanted running processes; these are some of the most common problems which cause your computer to run too slow. System Ninja is designed to help solve these issues and optimize the performance of your PC.

Like many other programs of the same kind, System Ninja can scan your computer for junk files and clean them up. Furthermore, it embeds a process manager which isn't that much different from the standard one that Windows provides, with the sole exception that it also displays the program path.

In the latest update, System Ninja came up with some interface improvements which allow you to customize the exclusion and inclusions list even further. Another important enhancement is that the program itself was optimized to require less resources, thus being a bit faster and more efficient.

As far as I'm concerned, System Ninja has a major flaw as it doesn't create a system recovery point before cleaning up your system. This means that if you do something wrong and you crash your system, you have no safety net to fall onto. So, if you aren't sure of what you are doing it is probably best not to go through it.

To sum it all up, System Ninja is a tool that I would recommend to advanced users who need a simple way to optimize their PCs. It does its job well, provides a handy startup applications manager and it doesn't cost anything, so it's surely worth to try.

Sean O'Reilly
Editor rating:

Review summary


  • Allows you to create inclusion and exclusion lists.
  • Provides detailed information about your computer and operating system.
  • Helps you manage the applications in the startup list


  • If you don't know what you are doing you might cause your system to crash.
  • It doesn't create a system restore point
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