List of the Best Disk Cleanup Software in 2026

What is Revo Uninstaller?

Revo Uninstaller removes Windows applications and then scans for what the vendor's own uninstaller left behind — orphaned registry keys, folders and files — which is where a meaningful amount of reclaimed space and clutter actually lives. Its Hunter Mode lets you point at a running program or ...

What is Glary Utilities?

Glary Utilities is a maintenance suite bundling around twenty tools: disk cleanup, registry repair, startup management, shortcut fixing, duplicate file finding, empty folder removal, secure deletion and a driver updater. The one-click maintenance runs several of these together. It is a suite ...

What is CleanMyMac?

CleanMyMac from MacPaw handles macOS system junk, large and old files, application caches and incomplete downloads, and includes a proper uninstaller that removes the support files a drag-to-trash uninstall leaves behind — the most genuinely useful thing in the product. It also scans for macOS ...

What is PrivaZer?

PrivaZer is a Windows cleaner built around privacy rather than free space. It removes usage traces from the registry, browsers, applications, USB history and the pagefile, and overwrites free space so deleted data cannot be recovered. It is SSD-aware, adjusting its overwrite behavior to avoid ...

What is AVG TuneUp?

AVG TuneUp cleans junk files, browser caches and leftover application data, and includes an automatic maintenance schedule, a software updater and disk defragmentation. Its distinctive feature is Sleep Mode, which suspends background programs that are running but not in use and wakes them when ...

What is SpaceSniffer?

SpaceSniffer is a free, portable Windows disk usage analyzer using a treemap layout. It requires no installation, which makes it useful on machines where installing software is restricted or inadvisable, and it starts drawing results while the scan is still running rather than making you wait. ...

What is IObit Uninstaller?

IObit Uninstaller removes Windows applications along with their residual files and registry entries, and can uninstall several programs in one batch — the practical advantage when clearing a machine with years of accumulated software. It also removes browser extensions and toolbars, detects ...

What is Wise Disk Cleaner?

Wise Disk Cleaner removes Windows temporary files, browser caches, log files and system junk, with a slim mode that strips out unneeded Windows components. It includes a disk defragmenter, which is relevant on mechanical drives and unnecessary on SSDs. It is free for the core cleaning function, ...

What is IObit Advanced SystemCare?

Advanced SystemCare from IObit combines junk file cleanup, registry cleaning, startup optimization, privacy sweeping and real-time performance monitoring in one suite, driven mostly by a single scan-and-fix flow. The free tier covers basic cleaning; the Pro tier adds deeper optimization, ...

What is TreeSize?

TreeSize from JAM Software analyzes where disk space has gone, showing folder sizes in a tree view with drill-down, and scanning local drives, network shares and cloud storage. The Professional edition adds duplicate file search, file age and type analysis, scheduled scans and exportable ...

What is System Mechanic?

System Mechanic from iolo cleans junk files, repairs registry issues, defragments drives, manages startup programs and applies performance settings, with an automated maintenance mode that runs when the machine is idle. It has been in the market for over two decades and targets non-technical ...

What is Avast Cleanup?

Avast Cleanup removes junk files, browser data and unused applications, and includes automatic maintenance plus a sleep mode that suspends resource-heavy background programs. It runs on Windows, macOS and Android, with the Android version focused on photo and cache cleanup where storage limits ...

What is DaisyDisk?

DaisyDisk scans a Mac's drive and presents usage as an interactive sunburst chart, where each segment is a folder or file sized by disk consumption and clicking drills inward. Files are removed by dragging them to a collection area and deleting in one action, which prevents the accidental ...

What is Auslogics BoostSpeed?

Auslogics BoostSpeed combines junk file cleaning, registry repair, disk defragmentation, internet connection tuning and startup management in one Windows maintenance package. Auslogics' disk defragmenter is the component with the strongest independent reputation and is also available separately ...

What is BleachBit?

BleachBit is a free, open source disk cleaner for Windows and Linux. It clears caches, temporary files, logs and browser history across a long list of applications, and includes secure deletion — overwriting free space or specific files so they cannot be recovered. Being open source, what it ...

What is GrandPerspective?

GrandPerspective is a free, open source macOS utility that shows disk usage as a treemap — rectangles sized by file size, colored by type — making a single oversized file or an unexpectedly large folder immediately visible. It can filter what it displays, save scan results for later comparison, ...

What is OmniDiskSweeper?

OmniDiskSweeper from The Omni Group is a free macOS utility that lists folders and files sorted by size, largest first, letting you drill down and delete directly. There is no visualization, no optimization and no scanning intelligence — just an ordered list of what is consuming space. That ...

What is WinDirStat?

WinDirStat is a free, open source disk usage analyzer for Windows. Its signature is the treemap view: every file becomes a colored rectangle sized by how much space it takes, so a single enormous forgotten file is visible instantly in a way a folder list never makes obvious. It shows a ...

What is Ashampoo WinOptimizer?

Ashampoo WinOptimizer bundles disk cleaning, registry optimization, privacy sweeping, defragmentation, startup management and a set of Windows tweaking tools. It is more granular than most competing suites — settings are exposed rather than hidden behind a single button — which suits users who ...

What is iBoysoft DiskGeeker for Windows?

iBoysoft DiskGeeker for Windows is a comprehensive disk management tool. The software allows users to clone entire disks or partitions, either fully or incrementally and supports cloning partitions to enable BitLocker encryption. It also provides tools for analyzing disk space to facilitate ...