Is there a free alternative to CleanMyMac?

Yes. For developers, CacheCleaner is free and open source: it cleans Xcode caches, package manager caches, Docker, AI model caches and per-project build folders. For general Mac maintenance, OnyX is a free long-standing option.

Why is CleanMyMac not ideal for developers?

It's a general-purpose cleaner: it doesn't know what DerivedData, cargo registries or node_modules are, so the biggest space-eaters on a dev machine stay untouched. It's also a ~150 MB app with a subscription, while dev-junk cleaning is a solved problem for free tools.

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Free CleanMyMac alternative for developers

CacheCleaner guides · Updated July 19, 2026

Short answer: you don't need a subscription to clean a dev machine. CleanMyMac (~$40/year, ~150 MB) is built for everyone, which means it doesn't understand the folders that actually eat a developer's disk. CacheCleaner is free, open source, 2.8 MB, and built only for that.

What CleanMyMac misses on a dev machine

A general cleaner sweeps browser caches and the Trash. But on a developer's Mac the real weight sits elsewhere: Xcode device support symbols (2-5 GB per OS version), DerivedData (10-50 GB), the Docker VM (30-100 GB), cargo/gradle/npm caches, and a forgotten node_modules in every repo you ever cloned. None of that is in a generic cleaner's vocabulary.

Side by side

priceCleanMyMac: ~$40/year subscription. CacheCleaner: free, forever.
size~150 MB with background helpers vs a 2.8 MB native AppKit app with no agents.
dev depthCacheCleaner knows DerivedData, simulator runtimes, npm/cargo/gradle/brew, Docker, Hugging Face and Ollama models, and scans the whole disk for per-project build folders.
trustOpen source (GPL): you can read the code that deletes your files. Nothing is pre-selected; scans are read-only.
privacyNo account, no telemetry, no network calls.

When CleanMyMac is still the right tool

Honest note: if you want a polished all-round suite – malware scan, uninstaller, RAM babysitting – CleanMyMac does that and CacheCleaner deliberately doesn't. For non-developers it's a fine product. This page is for people whose disk is full of build artifacts, not photos.

CacheCleaner: free, open source, 2.8 MB. Typically reclaims 30-150 GB on an active dev machine.

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