Best Free & Open Source Alternatives to CCleaner

Mole is an all-in-one macOS cleaning and optimization toolkit that combines the functionality of CleanMyMac, AppCleaner, DaisyDisk, and iStat Menus in a single binary.

It provides deep cleaning to remove caches, logs, browser leftovers, and orphaned app data to reclaim gigabytes of space. The smart uninstaller removes apps along with their launch agents, preferences, and hidden remnants. Mole includes disk insights to visualize usage, find large files, rebuild caches, and refresh system services. It also offers live monitoring showing real-time CPU, GPU, memory, disk, and network stats in a beautiful terminal dashboard.

BoldPearcleaner is a free, source-available and fair-code licensed macOS app cleaner inspired by Freemacsoft's AppCleaner. It provides a comprehensive set of tools for cleaning and managing your Mac.

Key features include app uninstallation with orphaned file search, development environment manager, file search, Homebrew integration, PKG manager, plugin manager, and services manager. The app includes a Sentinel Monitor that runs in the background (~2MB RAM) to automatically clean up when apps are moved to trash. It also offers utilities to prune unused app translations and strip unneeded architectures from universal apps.

PureMac is a free, open-source macOS cleaner that serves as a CleanMyMac alternative with zero telemetry. Built with native SwiftUI, it runs entirely offline with no analytics, no telemetry, and no network calls.

The app offers Smart Scan for one-click scanning across all categories, system junk cleaning for caches and logs, user cache cleaning for application and browser data, mail attachment cleanup, trash bin emptying, large and old file detection, purgeable space management for APFS snapshots, Xcode junk cleaning for derived data and archives, and Homebrew cache cleanup. It also supports scheduled cleaning with configurable intervals and auto-purge capabilities.

MangoDisk is a cross-platform desktop application built with Tauri 2 and a Rust core that helps you reclaim storage space and understand what is actually using your disk. It runs natively on macOS and Windows and ships the same cleanup engine both as a graphical app and as a standalone mangodisk CLI.

The app focuses on five core workflows. Deep Cleanup scans caches, logs, package-manager downloads, IDE indexes, build artifacts (node_modules, Rust target, Gradle, Swift, Python, .NET, Godot, CMake outputs), and downloaded local AI models, grouping candidates by category with size, location, and a risk notice for each item. Large File Cleanup lets you browse videos, audio, images, archives, documents, and installers above a configurable size threshold and reveal them in Finder or Explorer. Duplicate File Cleanup verifies exact duplicates by content rather than filename, keeping at least one copy in each group. The Application Uninstaller inspects associated caches, preferences, and private app data, distinguishing required uninstall components from rebuildable data and user content. Disk Space Analysis renders a treemap and a list view of any disk or folder so you can drill down to the largest directories.

Unlike many commercial cleaners, MangoDisk maintains its own cross-platform cleanup rule library instead of copying rules from third-party projects. Each rule has to pass documentation checks against Microsoft, Apple, or vendor sources, define a safe cleanup boundary that excludes personal files and protected paths, and be validated on real macOS or Windows installs. Windows rules may use Winapp2.ini as a starting point, macOS rules may draw on relevant open-source projects, but neither is treated as sufficient on its own. The full rule library is public on GitHub for review. Scanning is read-only; nothing is deleted without an explicit user confirmation, and the desktop app shows the selected items and reclaimable space before any cleanup runs.

Compared to CleanMyMac X, DaisyDisk, and CCleaner, MangoDisk is fully GPL-3.0 and ships on both macOS and Windows from the same codebase, with a transparent rule set and a reproducible CLI for scripted use.