Head-to-Head
Deltempo vs CCleaner vs BleachBit
What actually differs between the four tools people compare most on Windows: licence, telemetry, what they are allowed to delete, and what they do when something is locked or broken.
Feature-by-feature comparison
Rows reflect publicly documented capabilities of each tool's current release. Where a vendor restricts a feature to a paid tier, it is marked as such rather than treated as absent.
| Feature / Capability | Deltempo | CCleaner | BleachBit | Bulk Crap Uninstaller |
|---|---|---|---|---|
| Licence | MIT open source | Proprietary | GPLv3 open source | Apache 2.0 |
| Telemetry | None - runs fully offline | Analytics; free tier ad-supported | None | None |
| Cleanup scopes | 26+ scopes OS, GPU shaders, dev caches, browsers |
Windows & browser | Windows & browser | Not a cleaner |
| GPU shader caches | NVIDIA, AMD, Intel, DirectX, Vulkan | Limited | Partial | - |
| Developer caches | NuGet, npm, pip, Cargo, Gradle, VS Code | - | Partial | - |
| Deep uninstaller | Bulk + leftover sweep + force removal | Paid tier | - | Yes |
| Duplicate file finder | 3-stage SHA-256 verification | Paid tier | - | - |
| Disk usage map | Interactive squarified treemap | Drive analyzer | - | - |
| Memory handling | Native NT kernel APIs NtSetSystemInformation, EmptyWorkingSet |
Basic; premium tier adds extras | - | - |
| Restore points | Optional, off by default | Varies by tier | - | Optional |
| Automation | CLI + JSON, Task Scheduler, Explorer menu | Scheduled cleaning | CLI & scripting | CLI |
| Distribution | Portable single file, no installer | Installer | Installer or portable | Installer + runtime |
Note: CCleaner is developed by Gen Digital. Feature availability differs between its free and paid tiers - confirm the current feature list on the vendor's site before relying on a row above.
Which one should you pick?
Pick Deltempo when...
You want one portable Windows app that cleans 26+ scopes, uninstalls programs down to their leftovers, finds byte-identical duplicates, maps disk usage and trims memory - with zero telemetry, no account and no paid tier.
Pick BleachBit when...
You need Linux support, or you want the smallest possible GPL cache cleaner with a scripting console and nothing else.
Pick Bulk Crap Uninstaller when...
Uninstallation is the only job. BCU is an excellent open-source bulk remover; Deltempo wraps equivalent deep-uninstall behaviour alongside its cleaner rather than replacing BCU for pure uninstalls.
Keep Windows Storage Sense when...
You want the operating system to handle storage cleanup on a schedule and never want to think about it again. It is the least capable option, but it is fully automatic and already installed.
Where Deltempo is deliberately narrower
- Windows only: there is no macOS or Linux build. On Linux, BleachBit remains the right tool.
- No browser history or password cleaning: login sessions, cookies and saved credentials are protected by policy, not by a checkbox you can accidentally clear.
- Refuses load-bearing paths: MSI source caches, the per-user .NET SDK root, driver vendor folders and shell registry hives are never offered as cleanup targets, even though they look like scratch space.
- Community supported: MIT licensed and maintained in the open, with no support contract or commercial SLA.
Sources: comparison rows are derived from each project's publicly documented feature set as of October 2026. Third-party trademarks belong to their owners; this page is an independent comparison written by the Deltempo maintainers.
Comparison FAQ
Common questions about these tools
Yes. Deltempo covers the same everyday job - disposable system, browser and developer caches - and adds a deep root uninstaller, duplicate file finder, large file hunter, treemap disk analyzer and native NT memory trim. It is MIT open source, has no ads, no paid tier and no telemetry, and it runs as a portable single file with no installer.
They solve different problems. BleachBit is a minimal, GPLv3 cache cleaner for Windows and Linux. Deltempo is Windows-only and broader: 26+ cleanup scopes with a deterministic 5-tier safety engine, GPU shader cache handling, an app uninstaller, a duplicate finder, a treemap visualizer, system repair tools and a native NT kernel memory optimizer. If you need Linux support, BleachBit is the right choice.
Bulk Crap Uninstaller (BCU) is an Apache 2.0 uninstaller, and Deltempo integrates BCU-style deep uninstallation including leftover and force-removal handling. Deltempo additionally cleans caches, finds duplicates, maps disk usage and trims memory. The two overlap on uninstallation only.
Deltempo sends none - it runs entirely offline with no analytics, trackers or ad SDKs. BleachBit and Bulk Crap Uninstaller are also local-only open source tools. CCleaner is proprietary and its free tier is ad-supported, with promotional offers and analytics documented in its privacy policy. Windows Storage Sense reports diagnostic data as part of Windows diagnostics.
Completely free. Deltempo is MIT licensed with no paid tier, no upsells, no account and no advertising. The source code is public on GitHub and releases are published as portable executables with SHA-256 checksums.
Pick Deltempo if you want cleaning, uninstalling, duplicate detection and disk mapping in one portable Windows app with no telemetry. Pick BleachBit if you need Linux or want the smallest possible cache cleaner. Pick Bulk Crap Uninstaller if uninstallation is the only job. Keep Windows Storage Sense if you want fully automated, OS-managed storage cleanup and nothing more.