Lean Apps
Small, offline viewers for local files
Three read-only desktop apps that open a Word document, a huge CSV file, or a Markdown file without the heavy application that usually comes with it. Each is MIT licensed and free.
The apps
-
Reads
.docxfiles as pages without Microsoft Office. Macros never run and nothing the document points to is fetched.A 600 KiB Linux package; no office suite needed
winget install abooodbah.LeanDoc -
Opens CSV, TSV, JSON Lines, and log files too big for Excel, keeping only the visible rows in memory.
20 million rows, 1.5 GB, 18.4 MB peak working set
winget install --id 9NMV8GKJXSN0 --source msstore -
Reads
.mdfiles, GitHub-flavored Markdown, and Mermaid diagrams offline, without opening an editor.About 74 ms to a visible window on Windows 11
winget install abooodbah.LeanMark
Install
Ways to install
| Route | LeanDoc | LeanRows | LeanMark |
|---|---|---|---|
| Microsoft Store (signed by Microsoft) | 9NSM04BJL6F6 | 9NMV8GKJXSN0 | 9MSS4WKJ22ZV |
| winget | abooodbah.LeanDoc |
Store build only, with --source msstore |
abooodbah.LeanMark |
| Chocolatey | choco install leandoc |
choco install leanrows |
choco install leanmark |
| Scoop | lean/leandoc |
lean/leanrows |
lean/leanmark |
| Homebrew (macOS) | abooodbah/tap/leandoc |
Windows only | abooodbah/tap/leanmark |
| GitHub Releases | Windows, Linux, macOS | Windows | Windows, Linux, macOS |
Scoop needs the bucket once:
scoop bucket add lean https://github.com/abooodbah/scoop-bucket
scoop install lean/leanrowsHomebrew:
brew install --cask abooodbah/tap/leandocChocolatey needs an administrator shell. A new version reaches it once Chocolatey's moderators have approved the package:
choco install leandoc -yThe GitHub Windows builds are unsigned, so Windows may show a SmartScreen warning; the Store builds are signed by Microsoft. The macOS builds are previews that are not notarized.
Android
Help test the Android apps
LeanDoc, LeanMark and LeanRows for Android are in a closed test on Google Play before their public release. Google needs testers who keep the apps installed for 14 days. Use the Google account you have on your phone.
Then, on your phone, open each tester page, tap Become a tester, and install the app from Google Play. If a page says the app is not available yet, Google is still reviewing the test; try again a day later.
What the three have in common
Read the file, change nothing
- Read-only. None of them edits or saves the file it opens.
- Offline. Their own code makes no network requests. LeanDoc and LeanMark draw pages with the system web runtime, which may contact its vendor on its own; LeanRows is a plain Win32 app.
- No telemetry. No account and no tracking.
- MIT licensed. The source of each app is on GitHub.