Best PC cleaner tools for Windows in 2026

BleachBit is free under the GPL-3.0 licence and weighs 14.4 MB. The listed version is 6.0.6.633, updated October 20, 2026. Its description covers clearing cache, deleting cookies, wiping browser history, removing logs and shredding temporary files, with support for thousands of applications such as Firefox, Chrome and Opera.

It works on both Linux and Windows. The description also mentions Adobe Flash among its targets, which suggests parts of the text are old, so check what it plans to delete before you run a clean.

Glary Utilities comes from Glarysoft Ltd and is at version 6.49.0.53, updated October 19, 2026. The download is 27.2 MB, the largest of the cleaning suites here, and the licence is proprietary.

The program offers multiple system tools to fix, maintain and protect a PC. If you want a bundle rather than a single-purpose tool, it is a reasonable candidate, but read the program's own feature list first.

Advanced SystemCare is made by IObit and is freeware at version 20.0.1.256, updated October 16, 2026.

The developer says the software uses AI to clean junk files, adjust system settings and speed up the computer. It also offers privacy tools that clear traces and block suspicious processes, plus an Internet Booster and real-time tune-up. Anyone who prefers to control each change by hand may find an automated optimizer less comfortable.

Autoruns from Sysinternals is a viewer for startup entries, not a junk cleaner. It lists programs and drivers set to run at boot or login, including items in the startup folder, Run and RunOnce keys, and other Registry locations. It also reports shell extensions, toolbars, browser helper objects, Winlogon notifications and auto-start services.

The package is 3 MB at version 14.3 and includes Autorunsc, a command-line version that can write CSV output. The last update in the catalog is June 17, 2026, older than most entries here. It suits people comfortable reading Registry-level details.

Defraggler from Piriform reassembles fragmented files. You can defragment a whole drive or pick individual files. It is compact and portable and supports NTFS and FAT32 file systems.

The download is 7.1 MB at version 2.22. It was last updated August 3, 2023, which makes it the stalest entry in this list by a wide margin. Check how it treats solid-state drives before using it on one. It fits older hard-disk setups best.

Revo Uninstaller Free from VS Revo Group runs a program's own uninstaller first. It then scans for files, folders and Registry entries that remain. That two-step approach is the main reason to pick it over the built-in Windows removal tool.

The description adds history and trace cleaning, startup management and removal of Windows apps. Version 2.7.2 was updated October 6, 2026, and the download is 11.3 MB. It is listed as freeware, so check the developer's terms for what the free edition includes.

BCUninstaller, short for Bulk Crap Uninstaller, is built for removing large numbers of applications with little input. It can clean leftovers, detect orphaned applications and run uninstallers from premade lists. It is also compatible with Windows Store apps and Steam.

It was made with IT professionals in mind, though the developer says the default setup is simple enough for anyone. Version 6.3.0.0 was updated September 7, 2026. It weighs 9 MB and uses the Apache-2.0 licence, which makes it open source.

Geek Uninstaller is the smallest uninstaller in the set at 4.6 MB. Version 1.6.0.200 was updated October 14, 2026, and the licence is proprietary freeware.

The developer calls it the best free uninstaller, which is a marketing claim without ratings or comparisons behind it. Confirm details such as leftover scanning or batch removal on the developer's page. Choose it if size and simplicity matter more than documented features.

Wise Program Uninstaller, from WiseCleaner.com, Inc., removes Windows applications and then runs a built-in scan. The scan looks for associated files, folders and Registry items left after removal. The aim is a complete removal.

The version is 3.2.7, dated October 17, 2025, and the download is 10.6 MB under a proprietary licence. That is about a year behind the freshest entries here. The developer describes it as simple to operate, which is its own wording rather than a tested result.

HiBit Uninstaller from HiBitSoftware targets stubborn software, Windows apps and browser extensions. That browser extension coverage separates it from some of the other removers in this list.

It is 4.3 MB at version 4.0.10, updated February 10, 2026, with a proprietary licence. Check the developer's page to confirm things like leftover scanning or batch removal. It is a small download worth considering if extensions are the main problem.

CCleaner 7 comes from Piriform, the maker of Defraggler. The version is 7.11.1522.1958, updated September 16, 2026. The size is 1.8 MB and the licence is freeware.

It covers removing unnecessary files, freezing resource-heavy apps, clearing errors and broken settings, updating drivers, and erasing tracking cookies and history. Check the developer's page for which of those functions are in the free version before installing.

IObit Uninstaller removes unwanted programs, browser plug-ins and Windows apps, and it tries to detect stubborn software and its associated files. It offers batch uninstallation, software health management and browser protection.

Version 16.0.0.34 was updated September 14, 2026, and it is freeware. The performance and security improvements it mentions are developer claims. Since IObit also makes Advanced SystemCare, the two overlap in some privacy and cleanup duties.