System Ninja Portable is a simple yet powerful cleaning app that scans your system and helps you get rid of junk files, while also performing other optimization tasks.

Though not as feature-rich as other similar programs like CCleaner, System Ninja Portable does its job and does it well. The program doesn't require installation, which is always a pro, and scans your system for all sorts of elements, from cookies and recently opened documents to internet history and temporary files.

Using System Ninja Portable is really simple: run the app and click the Scan Drive button. The junk scanner will sweep your computer in search of all the files that can be safely deleted to recover hard drive space and speed up your computer. When the list is full, you can check which ones you want to delete. Remember, though, that System Ninja Portable doesn’t create a backup before you delete those files.

System Ninja Portable also features a basic startup manager and process manager, with which you can handle apps that launch at system startup and keep an eye on currently active processes respectively.

System Ninja Portable is a simple, effective system cleaner with which you can easily remove all the junk files that are taking up hard drive space and slowing down your system.