Temp Cleaner is a small portable tool for cleaning of temporary files left wasting space.

Free Space Wipe is a simple, stripped-down free space wiper that provides a fast option to prevent disk tools from undeleting files and disk imaging tools from copying old files or file fragments.

PrivaZer can clean old files, internet activity, traces of software use, gain free space, clean the registry keeping your computer clean and secure.

Delete.On.Reboot is a simple but powerful option for deleting non-erasable files, directories, subfolders upon Windows restart.

Argente Disk Cleaner is an efficient option for cleaning your hard drive. This tool is a part of Argente Utilities.

Argente Duplicate Finder will assist you in finding and removing duplicate files.

CCleaner is an easy-to-use, safe, well-known drive cleaner with other additional features including a conservative registry cleaner, startup manager, and more. Video tutorial available. CCEnhancer can extend the cleaning capabilities of CCleaner.

Microsoft PC Manager is designed to help boost your machine's performance through a simple, user-friendly app.

PrivacyRoot Clean Space can remove unneeded files that waste space on your drive and protect your privacy by making deleted files unrecoverable.

DUDE (Duplicates Detector) helps you quickly identify and eliminate duplicate files within a designated folder.

Wise Disk Cleaner is a free, user-friendly, fast, and easy-to-use application developed to free up disk space. Video tutorial available.

Find.Same.Images.OK is designed to locate duplicate images as well as any that are rotated or mirrored and more.

iBoostUp is designed to enhance your machine's performance by pinpointing and removing unnecessary files that can accumulate over time, freeing up valuable disk space. This optimization process also involves freeing up memory, which can lead to a noticeable increase in your machine's speed and responsiveness.

HDCleaner is a freeware app to completely clean your Windows PC, including registry and backup, encrypting data, splitting files, removing traces, etc.

WizTree is a disk space analyzer for quickly scanning your entire hard drive and showing you which files and folders are using the most disk space.

Wagnardsoft Tools (WTools), from the authors of Display Driver Uninstaller, will help clean unused registry keys, remove temp files, and more.

Wise Duplicate Finder can free up drive space by finding and deleting duplicate files by name, size, or contents.
Portable version is also available.

Privacy Eraser is not just a drive cleaner but also an all-in-one privacy suite that protects your privacy and optimizes your computer so it runs faster. Video tutorial available.

Glary Tracks Eraser is an easy-to-use free privacy protection tool that allows you to erase all history tracks safely and completely.

Clean Master for PC cleans and optimizes your PC by helping remove junk files, fix privacy leaks, and boost your PC. Video tutorial available.

Glary Disk Cleaner protects your privacy, optimizes system performance, and releases considerable disk space for free.

R-Wipe & Clean is a complete R-Tools solution to wipe useless files and maintain your computer privacy.

Wipe can protect your privacy on the internet and recover free disk space.

MeinPlatz, or My-Place, offers an easy and fast way to scan the hard disk for lost disk space.

Dup Scout is a free duplicate file finder that allows you to search for and clean up duplicate files on local disks, network shares, NAS storage devices, and enterprise storage systems.