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Lacuna
Find what's eating your Mac's storage and clear it safely
Lacuna shows exactly where your Mac's storage went and helps you clear it safely. • Fast: a Rust scanner reads millions of files in seconds • Exact: totals match du, hard links counted once • Safe: you review every path, then it goes to the Trash • Private: no network access, no account, no tracking • Free and open source (MIT), 6.6 MB, Apple silicon and Intel
Hey Product Hunt! 👋
I built Lacuna because my Mac kept running low on space and I wanted to see exactly what was taking it, without paying for an app or sending my file list anywhere.
What makes it different:
⚡ Fast: the scanner is written in Rust and reads whole folders per system call across 16 threads. On my machine it scanned 6.2 million files in 32 seconds.
🎯 Exact: totals match macOS's own du command, to the kilobyte.
🗑️ Safe: nothing is deleted outright. You collect items, see every path and the total, and they go to the Trash so you can put them back.
🔒 Private: no network access, no analytics, no account.
🌗 Feels native: light and dark mode, keyboard shortcuts, and a 6.6 MB download.
It's free and MIT licensed: github.com/nakel-ola/lacuna
One heads-up: Lacuna isn't notarized by Apple yet, so the first launch needs System Settings → Privacy & Security → "Open Anyway". It's a one-time step.
I'd love your feedback. What should I build next?
No comment highlights available yet. Please check back later!
About Lacuna on Product Hunt
“Find what's eating your Mac's storage and clear it safely”
Lacuna was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #137 on the daily leaderboard. Lacuna shows exactly where your Mac's storage went and helps you clear it safely. • Fast: a Rust scanner reads millions of files in seconds • Exact: totals match du, hard links counted once • Safe: you review every path, then it goes to the Trash • Private: no network access, no account, no tracking • Free and open source (MIT), 6.6 MB, Apple silicon and Intel
Lacuna was featured in Mac (103.8k followers), Productivity (663.6k followers), Open Source (69k followers) and GitHub (41.4k followers) on Product Hunt. Together, these topics include over 230.4k products, making this a competitive space to launch in.
Who hunted Lacuna?
Lacuna was hunted by Olamilekan Nunu. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Lacuna stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Olamilekan Nunu