Best Memory Cleaners for Windows 11 (No Ads, No Subscriptions)
Most "memory cleaner" lists are affiliate pages. This one is short and honest: four options, what each is good at, and when you do not need any of them.
Disclosure: we develop MemoryCleaner. We list it first because we know its internals — but the other options are genuinely useful, and Task Manager is free.
1. MemoryCleaner — best for a simple, no-ads workflow
Who it is for: people who keep many apps open and want to free idle memory without closing anything.
- Sortable per-app memory list with search (name or initials)
- One-click release of idle pages — not a process kill
- ~2.5 MB, portable, no ads, no telemetry
- $20 one-time for up to 5 devices; 30-day trial, no account
Trade-off: it focuses on memory, not on "PC optimization" suites — no registry cleaners, no driver updaters.
2. Task Manager — free and built in
Who it is for: everyone, as a first step.
- Ctrl+Shift+Esc → Details → sort by memory to see the real consumers
- End unnecessary apps; trim Startup apps once and every boot benefits
Trade-off: no "release idle memory" button — you close apps instead.
3. Wise Memory Optimizer — free, simple
Who it is for: users who want a free on-demand memory tool and do not mind a larger vendor ecosystem.
- Frees memory manually or on a schedule
- No cost
Trade-off: expect cross-promotion for other Wise products.
4. Razer Cortex — best for gamers
Who it is for: people who want background processes paused while gaming and an FPS overlay.
- Game booster that suspends background apps during play
- FPS and system monitoring overlays
Trade-off: a suite, not a single-purpose tool; it promotes Razer products.
How to choose in 30 seconds
- Just want it done, once, cheaply → MemoryCleaner trial
- Zero budget, occasional use → Task Manager or Wise
- Gaming performance → Razer Cortex
What no cleaner can fix
If memory stays high with nothing open: check Startup apps, scan for malware, and reboot to clear leaks. No tool should be your daily fix for a memory leak — find the leaking app instead.
Try MemoryCleaner free for 30 days — no account, no ads, no telemetry.
Download MemoryCleanerMore: Side-by-side comparison · Why is my PC using so much memory?