See what changed. Share the answer.
Features
01 Investigate
See which folders are taking up space without opening each one.
Users holds 211.2 GB of this disk. The largest-files list surfaces a 34.6 GB Docker disk and several large videos, so you know where to look first.
02 Cleanup
Reclaim finds build output, package downloads, caches, and the Trash, with a size and a reason for each suggestion. You choose what goes, and every deletion is logged.
See the full-size Reclaim screenshot
Xcode’s DerivedData takes 9.6 GB here. Reclaim explains that the next build recreates it. Review the paths, then choose what to clear.
03 Compare
Compare saved scans to see which folders grew, shrank, or stayed the same. Find the source of the growth before you decide what to clear, or whether you need more storage.
Choose an earlier scan to set the point of comparison.
04 Report
Show a colleague or client what is taking up space, what grew, and what could be cleared. Export a report with the largest folders and files, disk capacity, and cleanup suggestions.
Open the sample report Open the sample JSON See a synthetic school example
05 From the terminal
Point leita at a directory to see its largest files and folders. Run it locally or from an SSH session.
For structured output, add --report usage.json to write the scan as JSON.
$ leita --no-history --whole /
largest files (4)
16.0 MiB /downloads/linux.iso
8.0 MiB /projects/leita/build/leita
4.0 MiB /projects/site/assets/demo.mp4
2.0 MiB /photos/holiday.jpg
largest directories (8)
30.0 MiB /
16.0 MiB /downloads
12.0 MiB /projects
8.0 MiB /projects/leita
8.0 MiB /projects/leita/build
4.0 MiB /projects/site
4.0 MiB /projects/site/assets
2.0 MiB /photosSizes and paths, ready to read, grep, or pipe.
Leita scanned 405,634 entries in 49.22 ms on a warm cache under Linux. Leita and ncdu compute disk usage; fd and find only list names, and fd’s metadata mode also reads each entry’s attributes.
| Tool | Total time (ms) | ns/op | Peak memory (MB) |
|---|---|---|---|
| 200,000 files · 203,020 entries | |||
| Leita | 26.25 | 129.3 | 22.83 |
| fdnames only | 18.50 | 91.1 | 36.04 |
| fdwith metadata | 39.84 | 196.2 | 31.02 |
| find | 63.63 | 313.4 | 3.01 |
| ncdu | 275.03 | 1,354.7 | 3.38 |
| 400,000 files · 405,634 entries | |||
| Leita | 49.22 | 121.3 | 39.68 |
| fdnames only | 30.65 | 75.6 | 38.40 |
| fdwith metadata | 69.95 | 172.5 | 34.57 |
| find | 124.21 | 306.2 | 3.29 |
| ncdu | 530.49 | 1,307.8 | 3.23 |
Total time is the median of 7 runs. One operation is one filesystem entry. ns/op is median elapsed time divided by the verified entry count, not individual operation latency. Peak memory is the highest process RSS across those runs, in decimal MB.
Measured 2026-10-19 on an AMD Ryzen 9 7900X3D with Linux 7.2.5 and btrfs (compress=zstd:3). Each tool had 2 warmups, then 7 measured runs in randomized order with warm filesystem cache. Timing includes the GNU Time wrapper, process startup, and output. The fixture root is excluded from entry counts.
g8e42581, optimized development build; fd 10.5.0; GNU find 4.11.0-modified; ncdu 2.9.2.$LEITA --no-history --whole --color never $TREE$FD -HI --one-file-system -0 . $TREE$FD -HI --one-file-system --changed-before 2100-01-01 -0 . $TREEfind $TREE -xdev -mindepth 1 -print0$NCDU -0 --ignore-config -x -o /dev/null $TREEThe date filter makes fd read modification times without excluding any entries in these fixtures. Both modes returned identical path sets; an untimed syscall trace confirmed the metadata lookups. These commands still perform different work.
The ncdu run exports JSON to /dev/null; its memory figure is for that command, not an interactive ncdu session. Download raw results (JSON) · Download the Python runner · Reproduction instructions
Compared
| Feature | Leita | WizTree | WinDirStat | DaisyDisk | ncdu |
|---|---|---|---|---|---|
| Runs on | Linux, Windows, macOS | Windows, macOS | Windows | macOS | Linux, macOS, BSD |
| Exports | PDF, HTML, CSV, JSON | CSV | CSV, JSON | — | JSON |
| Shows what changed | ✓ | — | — | — | — |
| Command line | ✓ | ✓ | ✓ | — | Terminal only |
| At home | Free / $39 | Free | Free | $9.99 once | Free |
| At work | Free / $99 | From $100 | Free | — | Free |
Swipe sideways for the other tools. A dash means the tool’s own site does not list it, as of October 2026.
I built Leita to show how good desktop software can be: fast, beautiful, and firmly under your control. The scanner gets the same care as the interface. It is sovereign software: it runs on your machine, keeps your files private, and leaves the decisions to you.
I chose Odin and Blend2D because I enjoy building close to the machine, and because they let me keep one clear interface across operating systems that stays responsive while a scan runs.
Leita puts my own building blocks to work on real disks. The interface declares what it draws and what data it needs, so it runs and is tested apart from the scanner, even without a window. That separation is what keeps the finished application dependable.
Acknowledgements
10% of profit
A tenth of Leita’s profit goes to its open-source dependencies. When you buy Leita, you also pay the people who make it possible.
Pricing
Start with Free. Every Pro plan has the same features; pick the one that matches how you use Leita.
Annual plans
For everyone, including organisations.
$0free
One person outside commercial use.
$39USD/year
One commercial operator, including client machines.
$99USD/year
Organisation-wide internal use across locations.
$499USD/year
Pay for updates, keep what you paid for. Cancel renewal any time. Every version released during your paid term keeps Pro, offline, permanently. Read the plan details.
Download
For Linux, Windows, and macOS. No account needed to download.
Free at home and at work. Pro is a licence you add later. Read the licence.
Hear when Leita gets better. Occasional release notes. No account needed. Unsubscribe anytime.
Questions
Not for Free, which covers scanning, charts, search, manual cleanup, and CSV and JSON export. Pro adds tracking, automation, and professional reports, and needs a licence.
Scans, the deletion log, and checks of an imported licence stay on your machine. Automatic release checks are off until you turn them on in About. Then Leita reads public release metadata once when the app starts and once a day, and does not install the program. You can also check, or download an update, when you ask. A receipt key is sent to fetch its licence, and again if a stored licence fails its signature check. Monitoring alerts go only to the address you add.
Yes. Free is available to organisations. Organisation Pro covers internal use across all your locations; Professional Pro covers one commercial operator, including work on client machines. Procurement summary.
Choose Licence in settings and add your licence. A signed licence can be imported offline. A receipt key is sent to fetch its licence, and again if a stored licence fails its signature check. A valid licence is then checked on the computer.
Send me a message for questions or bug reports. I handle support personally, alongside development. No response or fix is guaranteed.
No. Cancelling stops the next renewal. Updates and included assistance continue through your paid term, and eligible versions keep Pro offline permanently. Your records remain accessible. Read the plan details.
Librium LLC makes Leita. Polar Software, Inc. is the reseller and merchant of record. Plan details.
Talk to the maker
Have a question, or a workflow Leita doesn’t cover? Tell me what you’re trying to do. I want to hear what’s missing, whether you use Leita yourself or are weighing it for your organisation.
Send a message
