Best Mac Cleaner for Developers in 2026, Compared

The best Mac cleaner for developers is the one that understands developer data: Xcode DerivedData and simulators, node_modules, Docker’s disk image, git worktrees and local AI models. General cleaners like CleanMyMac focus on system junk, malware and apps. Free tools each cover one slice. DevCleanup covers the developer side in one native app.

TL;DR

• Mostly need system junk, malware scanning and app updates? CleanMyMac. It’s notarized by Apple and has a new developer CLI in early preview.
• Want to see where space went and decide yourself? DaisyDisk (one-time purchase), or the free OmniDiskSweeper and GrandPerspective.
• Want free and open source? Mole for general cleanup, npkill for node_modules, DevCleaner for Xcode for Xcode caches.
• Want all developer cleanup in one app, with git and real-space checks? DevCleanup. It’s free to scan, and cleaning costs $29 once. It’s new, Mac-only and not open source.

What developers need from a Mac cleaner

Developer Macs fill up differently from everyone else’s. The space usually isn’t in browser caches or mail attachments. It’s in:

• Xcode: DerivedData, old simulator runtimes, device support files and archives. See how to delete Xcode simulators.
• JavaScript projects: a node_modules folder in every project you’ve ever cloned.
• Docker: a single large disk image that never shrinks on its own. See why Docker.raw is huge.
• Git worktrees: AI coding agents create one per task, each with its own dependencies. See git worktree remove vs prune.
• Local AI models: Ollama, Hugging Face and LM Studio downloads, often several gigabytes each.
• Toolchains and package caches: old Node, Python and Ruby versions, Homebrew, npm, pip and Cargo caches.

That changes what “good” means. A developer cleaner should know which folders regenerate and which don’t, never touch a repository’s history, warn about uncommitted or unpushed work, and report sizes honestly. That last point matters more than it sounds: APFS clones and hard links (pnpm uses them heavily) make many tools count the same bytes twice, so the “you can free 80 GB” headline turns into 20 GB once you’ve deleted.

The contenders

CleanMyMac

CleanMyMac from MacPaw is the best-known Mac cleaner. Its site lists Smart Care (a combined cleanup, threat scan, performance and update routine), Cleanup, Protection (malware removal), Performance, an Uninstaller that also updates apps, Clutter (duplicates, similar photos, large files) and cloud storage cleanup. It requires macOS 11 or later and carries a “Notarized by Apple” badge.

On pricing, MacPaw’s site showed plans “starting at $3.33/month” when we checked in October 2026. MacPaw’s support pages describe three ways to buy: a subscription (which includes future major versions), a one-time purchase (updates for the current major version only), or through Setapp. There’s a free trial.

For developers, the interesting news is CleanMyMac CLI, which MacPaw announced in July 2026 as an early developer preview, installed through Homebrew. It adds commands for developer-tool caches, Xcode junk such as DerivedData, and a purge command for old build artifacts in project folders. MacPaw’s announcement doesn’t mention simulators, git worktrees or AI models.

Good fit if you want one subscription that covers malware scanning, app updates and general cleanup, and you’re happy to let the developer side mature.

DaisyDisk

DaisyDisk is a disk visualizer: it scans a drive and shows usage as interactive rings you drill into. You pick what to delete; it doesn’t decide for you. It can scan as administrator to reveal hidden usage, break down the System Data category, and find and remove local snapshots. It also scans cloud services like Dropbox and Google Drive.

It costs $9.99 as a one-time purchase on its official site, for up to five personal Macs, with a free trial. It’s also on the Mac App Store and runs on macOS 10.13 or newer.

Good fit if you want to understand your disk visually and you already know which developer folders are safe to delete.

OmniDiskSweeper

OmniDiskSweeper from The Omni Group is free and simple: it lists files and folders from largest to smallest and lets you open or trash them. It doesn’t know what any folder is or whether it’s safe to remove.

Good fit if you want a free, no-frills “what’s big?” list.

GrandPerspective

GrandPerspective shows disk usage as a treemap: every file is a rectangle sized by how much space it uses. It’s open source under the GPL, free to download from SourceForge, and $2.99 on the Mac App Store (the same app, with automatic updates). The latest version requires macOS 14.

Good fit if you think visually and want something free and open source.

DevCleaner for Xcode

DevCleaner for Xcode focuses on one thing: Xcode’s data. It cleans device support files, archives, DerivedData, simulator and device logs, and documentation caches. It’s open source (GPL-3.0) and free on the Mac App Store, with optional tips as in-app purchases. It requires macOS 14, and its README warns that it relies on Xcode’s internal folder layout, which can change between versions.

Good fit if Xcode is your only problem.

npkill

npkill is a free, MIT-licensed command-line tool that finds node_modules folders, shows their size, and deletes the ones you pick. Run it without installing:

npx npkill

It can target other folder names with -t (for example -t node_modules,.cache) and start from a specific folder with -d. It flags node_modules folders that some apps need to run.

Good fit if JavaScript dependencies are most of your problem.

Mole

Mole is a free, open-source (GPL-3.0) command-line cleaner for macOS 12 and later, installed with brew install mole. mo clean clears caches, logs and leftovers (including developer-tool caches like npm and pnpm), mo purge finds rebuildable project folders such as node_modules, target and dist, and mo uninstall removes apps with their files. Most destructive commands support --dry-run. Note that clean and purge delete permanently rather than using the Trash.

Good fit if you want a scriptable, open-source CleanMyMac alternative and are comfortable in the terminal.

macOS Storage settings

The built-in option costs nothing. In macOS Ventura and later, go to System Settings > General > Storage. You get a breakdown by category and recommendations such as optimizing iCloud storage and emptying the Trash. Its weak spot for developers is System Data, a catch-all category it doesn’t break down.

Good fit if you need a quick look and occasional cleanup, not a regular routine.

DevCleanup

DevCleanup is a native SwiftUI app (about 7 MB) for macOS 14 and later, on Apple silicon and Intel, built specifically for developer data. It has dedicated screens for Simulators, Projects (node_modules and build output), Worktrees, Docker, AI Models, Toolchains, IDE Leftovers and System Data, plus Smart Clean for caches and logs, Space Lens for a disk map, and Clone Dedupe.

A few design choices set it apart:

• Real-space accounting. On the developer screens and in Space Lens, APFS clones and hard links aren’t counted twice, so the number it shows is the space you actually get back.
• Git-aware. It never deletes a git repository. Worktrees with uncommitted or unpushed work are flagged and not pre-selected, and removal goes through git worktree remove.
• Uses each tool’s own commands. Simulators go through xcrun simctl, and worktrees through git.
• Everything is logged. History records each cleanup with how to restore it.
• Private. No analytics and no account. It only goes online to activate a license or, if you opt in, to check for updates.

It’s fast: a full scan covers about 31 million files in roughly 97 seconds, and most screens load in one to five seconds.

Scanning is free, as are Smart Clean, Space Lens, the Trash viewer, the Uninstaller, Large & Old Files and the System Data screen. Pro is $29 once for the current major version, with a year of updates, on up to three Macs. Pro unlocks the developer cleanup actions, Clone Dedupe, automatic cleanup rules, menu bar Quick Clean and the CLI’s clean commands.

Where DevCleanup is weaker:

• It’s new. Version 1.0 doesn’t have the years of track record that CleanMyMac, DaisyDisk or OmniDiskSweeper have.
• Mac only, macOS 14 and later. Older Macs stuck on macOS 13 or earlier can’t run it.
• Developer cleanup is paid. You can see exactly what’s taking space for free, but cleaning simulators, projects, worktrees, Docker and AI models needs Pro.
• It isn’t open source. If that’s a requirement, look at Mole, GrandPerspective, npkill or DevCleaner for Xcode.
• It’s not a security suite. There’s no malware scanning, app updating or performance tuning. If you want those, CleanMyMac covers them.

Comparison table

Tool	Type	Price model	Developer-specific cleanup	Open source
CleanMyMac	All-in-one cleaner and security	Subscription or one-time; free trial	CLI in early preview: dev caches, Xcode junk, build artifacts	No
DaisyDisk	Disk visualizer	One-time ($9.99); free trial	None built in; you choose what to delete	No
OmniDiskSweeper	Largest-first file list	Free	None	No
GrandPerspective	Treemap visualizer	Free; $2.99 on the App Store	None	Yes (GPL)
DevCleaner for Xcode	Xcode cleaner	Free, optional tips	Xcode only	Yes (GPL-3.0)
npkill	CLI	Free	node_modules and other named folders	Yes (MIT)
Mole	CLI cleaner	Free	Dev caches, project build folders	Yes (GPL-3.0)
macOS Storage	Built-in settings	Free	Minimal	No
DevCleanup	Native developer cleaner	Free scan; Pro $29 one-time	Xcode, simulators, projects, Docker, worktrees, AI models, toolchains, IDEs	No

Prices were checked on each official site in October 2026 and may change.

Is CleanMyMac safe?

Yes. CleanMyMac is a long-running commercial product from MacPaw, notarized by Apple, and MacPaw says it never touches system files and doesn’t automatically delete personal files such as documents and photos. Notarization means Apple’s automated scan found no known malware. It isn’t a full audit, but it’s the same check Apple requires of Mac apps distributed outside the App Store.

The real risk with any cleaner, CleanMyMac included, is deleting something you needed: a model you’ll have to download again, an archive you needed for crash symbols, or a worktree with commits you never pushed. Download cleaners only from the developer’s own site or the App Store, and look at what’s selected before you click clean.

The best CleanMyMac alternative for developers

It depends on what you used CleanMyMac for:

• Freeing space from developer data: DevCleanup if you want one app with git and real-space checks, or Mole plus npkill plus DevCleaner for Xcode if you’d rather use free, open-source tools.
• Seeing where space went: DaisyDisk, GrandPerspective or OmniDiskSweeper.
• Malware scanning and app updates: none of the developer tools here do this. CleanMyMac remains the choice if you want that bundled.

Do you need a cleaner at all?

No tool here does anything you can’t do yourself. Every developer folder has a command to measure it and a way to delete it, and our developer guide to freeing up Mac space lists them. What a cleaner adds is finding the folders you forgot about, checking for unpushed work and shared files before you delete, and doing it in a minute instead of an afternoon.

Do it in one click with DevCleanup

Download DevCleanup and run a full scan to see exactly where your space went, by developer category, with honest sizes. The Overview shows what can be freed, and Smart Clean and Space Lens work without paying. If the developer screens (Simulators, Projects, Worktrees, Docker, AI Models, Toolchains) find enough to be worth it, Pro unlocks one-click cleanup for $29 once. Download DevCleanup.