Radix free – Running out of Mac storage can feel like guesswork—until you try Radix, a free, open-source disk space analyzer that maps your drive into an interactive sunburst chart. Built with Swift and SwiftUI, it scans fast using native macOS APIs and keeps everything lo
The moment your Mac starts warning you about storage, the hard part isn’t the message—it’s the mystery. Apple’s built-in tools can point you to big categories, but they rarely make it obvious which exact folder, downloads folder, app files, or old projects are doing the damage.
Radix is trying to solve that frustration with something visual and immediate. It’s a free. open-source Mac app that scans a folder. drive. or volume and shows the results in an interactive sunburst chart. Instead of digging through Finder like it’s a second job. you get a clear overview of how storage is being used across your disk.
Radix presents that overview as a circular chart, where each ring represents another layer of folders. Bigger sections mean bigger storage use. so you can quickly spot which files or directories are taking up the most space. From there. it’s designed for exploration: you can click into sections to drill down. hover for more details. and sort or filter by size. name. date. or type.
Under the hood, the app is built with Swift and SwiftUI. Its developer, Colin Kim, says Radix uses native macOS APIs to keep scanning fast. In a Reddit post, Kim also said the app uses under 100MB of RAM on launch and is designed to handle large scans efficiently.
Radix is entering a crowded space, with a few well-known alternatives already on the Mac. DaisyDisk is often cited as the most polished option, but it costs $9.99. GrandPerspective and Disk Inventory X are older free alternatives. There’s also SquirrelDisk, which is open-source, but Kim says it hasn’t been maintained since early 2023.
What sets Radix apart isn’t just that it’s modern-looking—it’s that it’s free and open-source. while still offering features people expect from newer tools. It supports Quick Look, file metadata inspection, and search either within the current folder or across the full scan tree. Just as important for privacy-minded users: everything runs locally, with no account, telemetry, or data collection. Radix supports macOS 14.0 or later.
If your Mac storage problem has been dragging on because you can’t pinpoint what’s really consuming space, Radix offers a different starting point. It turns the drive into something you can actually read—one ring at a time.
Radix Mac disk space disk analyzer SwiftUI macOS 14 open-source app privacy local scanning sunburst chart storage management
Finally something that makes sense… my downloads folder is always sus.
So is this like DaisyDisk but free? Because I don’t wanna pay $10 just to see which folder is huge. Also if it doesn’t send data anywhere then cool, Apple should’ve done this.
Wait I thought mac storage issues are usually because of iCloud backups or whatever. But they’re saying it scans your folder/drive and shows a sunburst chart, so maybe it’s actually my old app files?? Idk I’m not clicking charts, I just delete stuff and hope.
Sunburst chart sounds cool but I’m skeptical. If it’s free and open-source why do they have all these “alternatives” like the paid ones… sounds like marketing to me. Also macOS 14 only? I’ve got an older Mac so guess I’m screwed. Still, local scanning is the one part I care about, not some app phoning home.