iliyami/macclean

Mac Clean is a free, open source Mac app that cleans junk files, scans for malware, uninstalls apps completely, and shows you what is taking up space on your hard drive, all from one interface. It is built as a transparent alternative to the paid app CleanMyMac, aiming to match most of its features without a subscription, telemetry, or ads. The app is organized into several areas. The cleanup tools scan for 16 categories of junk such as caches, logs, and leftover files, plus cached mail attachments and items in trash. The protection tools include a malware scanner with three scan depths and a privacy cleaner that removes browsing history and cookies from Safari, Chrome, and Firefox. The performance tools let you manage which apps launch automatically and run maintenance tasks like freeing memory and rebuilding system indexes. The uninstaller looks across many system folders to find every file connected to an app so nothing is left behind. There is also a visual disk map for finding large files, a duplicate file finder, and a secure file shredder. A separate menu bar tool shows live stats for CPU, memory, disk, battery, and network. Under the hood, Mac Clean is written in Swift 6 using SwiftUI and AppKit, with a background helper process for tasks that need elevated permissions and a small SQLite database. The project pays close attention to safety: system folders are protected from deletion, files are sent to Trash rather than erased outright by default, and there is a dry run mode to preview what would be removed before anything happens. You can install it with Homebrew using one command, through a one-line installer script, or by downloading a disk image from the Releases page. It can also be built from source using Swift's build tools, and it includes 275 automated tests. The project is released under the BSD-3-Clause license, a permissive license that allows free use, including commercial use, as long as credit is kept.