Radix: Native macOS Disk Space Analyzer (Open-Source DaisyDisk Alternative)

[u/ConwayTech]

Hey everyone! I recently released Radix, a macOS disk space analyzer.

The code is open-source, available here. You choose a path (directory, folder, volume, etc.), and the app scans it and displays the results in an interactive sunburst chart.

I built Radix as an alternative to DaisyDisk ($9.99). I tried using SquirrelDisk instead, an open-source Rust alternative, and it's great, but it hasn't been maintained since the start of 2023, and as you might expect, it has a bunch of issues right now.

Apps like GrandPerspective and Disk Inventory X are amazing, but Radix also competes with them, offering more efficient scanning and a much more intuitive and native UI. The main difference between those apps and Radix is that Radix uses sunburst visualization instead of treemaps.

Here are the main selling points in my eyes:

• Native macOS experience. Built with SwiftUI elements almost exclusively for an intuitive UI that fits right in with macOS itself. Native technologies have many benefits for an app like this.
• Really fast scanning engine using iterative traversal. Faster than all the competitors in my tests... uses a couple of cool shortcuts to save time!
• Lots of cool features that don't exist in some alternatives. Use Quick Look on any file, search just the current folder or the entire scan tree, and closely inspect the metadata of any file by clicking on it.

If you have low storage space on your Mac and are curious about what's taking up space, try Radix (it's only 3.41 MB)! Other solutions are great, but I've been trying to make Radix the best way for anyone to analyze their storage.

I also made a beautiful website for Radix (thanks Claude!), so feel free to take a look here and download the app there: https://radix.colinkim.dev/

Thanks so much! Feedback, bug reports, and feature requests are all welcome, and if you like the project, I'd love if you could star the GitHub repo (linked on the website).

One thing to note: My M1 and M5 MacBooks are both on macOS Tahoe, so I haven't been able to test Radix on Sequoia or below. Rather than ship something that might not work well, I've set the minimum macOS requirement for Radix to be macOS Tahoe 26, because I don't want to give users of older macOS versions an unpolished experience. Sorry about that :( — if there are a lot of you guys on older versions, I'll try to set up a few VMs for testing and allow older macOS versions to run the app.