Diskfern
Diskfern is a native macOS utility for analyzing storage and reviewing files for cleanup. It scans a Mac’s startup disk, home folder, selected folders, and connected drives, then organizes accessible files in treemap, list, and sunburst views. Users can compare folder sizes, search indexed file names with natural-language queries, apply filters, and use Smart Highlights to locate common storage such as developer caches, logs, downloads, and application data. File inspection provides size, location, permissions, safety labels, and Quick Look previews. Pro and Family add a review-based cleanup Collector, app removal, and one-click staging of selected items before they are moved to Trash. Disk Advisor can explain scan findings using Apple’s on-device language model on supported Macs. Diskfern is designed for Mac users who want to understand local disk usage and decide what to remove; scanning and storage analysis run on the Mac.
Learn more about Diskfern
macOS Catalina
If you're using one of these computers with OS X Mavericks or later, you can install macOS Catalina. Your Mac also needs at least 4GB of memory and 12.5GB of available storage space, or up to 18.5GB of storage space when upgrading from OS X Yosemite or earlier. To get the latest features and maintain the security, stability, compatibility, and performance of your Mac, it's important to keep your software up to date. Apple recommends that you always use the latest macOS that is compatible with your Mac. The version of macOS that came with your Mac is the earliest version it can use. For example, if your Mac came with macOS Big Sur, it will not accept installation of macOS Catalina or earlier. If a macOS can't be used on your Mac, the App Store or installer will let you know. For example, it might say that it's not compatible with this device or is too old to be opened on this version of macOS.
Learn more about macOS Catalina
MoreRoom
MoreRoom is a native Mac app to free up space on your Mac: a disk space analyzer and storage manager for macOS 15 or later, Apple silicon and Intel. It maps your disk in seconds, biggest items first, and labels each item in plain words: "Safe to remove", "Review first" or "Your data". It explains macOS System Data, shows the space the next macOS update needs, and finds large and old files, look-alike photos, downloads, caches and big cloud files. It uninstalls apps with their leftovers. For developers: Xcode DerivedData, old simulators, iOS DeviceSupport, Android SDKs, Homebrew, Docker, node_modules, Gradle caches. Items go to the Trash first, with Undo. Scans are read-only and files never leave your Mac. Free: see everything, remove items one at a time. Pro adds removing all safe items at once, goal mode, offloading to an external drive and project hibernation, for US$19.99 a year or US$39.99 once, 3 Macs, 30-day refund.
Learn more about MoreRoom
SimplyDiskSweeper
SimplyDiskSweeper scans your hard disk so you can figure out which files and directories are taking up the most space and delete them. Reclaim your disk space. Add a list of known directories that users can choose from to start scanning, for convenience. Drag and drop a folder onto the app icon in the Dock as well as directly onto the app window to start scanning.
Learn more about SimplyDiskSweeper