1. CCleaner: This free PC optimization tool is a great way to quickly clean out the clutter of your computer and speed up its performance.
2. Avast Cleanup & Tune Up: This tool is ideal for taking care of various tasks like cleaning up junk files, reducing startup times, defragging your hard drive, disabling unnecessary services, and more.
3. Advanced SystemCare: This free tool has a variety of features including a powerful system cleaner, a full-featured system optimizer, and a useful set of security tools.
4. Glary Utilities: This comprehensive suite of tools offers a wide array of features for both novice and expert users.
5. AVG PC TuneUp: This comprehensive system optimization tool comes with a range of features designed to keep your PC running smoothly, including disk cleanup, registry repair, and file shredder.