Free · Offline · Windows, macOS & Linux

Your notebook,
on paper that never runs out.

Korasa is a quiet place for your courses and projects. Write anywhere on real A4 pages, sketch diagrams, paste screenshots — and keep every note on your own computer.

No account. No cloud. Your notes stay yours.

What's inside

Everything a paper notebook does —
and the things it can't.

Real A4 pages

Plain, ruled, graph, dotted or bordered paper, portrait or landscape. Stack pages, lay them out freely, or focus on one.

Write anywhere

Click on the page and type. Headings, lists, code, colours, highlights and sticky notes — all editable, all selectable.

Diagrams that stay connected

Shapes, arrows and connectors that follow when you move things. Group, align, rotate, layer — like a whiteboard on paper.

Ink & highlighter

Smooth freehand pen with pressure support for styluses, a highlighter for your notes, and an eraser that just works.

Paste screenshots

Ctrl/⌘+V a screenshot or drop images straight onto the page. Resize, rotate, caption and place them beside your notes.

Crisp PDF export

Export a page or a whole project to A4 PDF with sharp vector text and shapes, or save pages as PNG.

A Computer Networks page with a DNS resolution diagram and notes
Organised the way you study. Courses, folders and projects — each project a stack of pages you can reorder, duplicate and export.
The Korasa home screen in dark mode
Pick up where you left off. Recent work, favourites and instant search through the text inside every page. Light and dark.

Local-first

Your notes never
leave your machine.

Korasa runs entirely on your computer. There is no account to create, no server to trust and nothing to sync unless you choose to copy your files.

  • Works offline. Always. Planes, trains, exam halls.
  • No telemetry. Korasa doesn't phone home — not even for analytics.
  • Autosaves as you go, and recovers unsaved edits if your computer crashes.
  • Plain local storage. A database and your images in your app-data folder — back it up like any other folder.
  • Portable projects. Export any project as a single file and open it on another computer.

Download

Get Korasa for free.

Pick your system below.

Installation notes

Windows

Run the installer. Because Korasa isn't code-signed yet, SmartScreen may say “Windows protected your PC” — choose More info → Run anyway.

macOS

Open the .dmg and drag Korasa to Applications. On first launch macOS will block it because it isn't notarised: open System Settings → Privacy & Security and click Open Anyway.

Linux

AppImage: make it executable (chmod +x Korasa-linux-x86_64.AppImage) and run it. Debian/Ubuntu: sudo apt install ./Korasa-linux-amd64.deb.

Questions

Good to know

Is Korasa really free?

Yes. Download it and use it — there's no subscription, trial or account.

Where are my notes stored?

In your user's app-data folder: %APPDATA%\Korasa on Windows, ~/Library/Application Support/Korasa on macOS and ~/.config/Korasa on Linux. Uninstalling the app leaves your notes in place.

Does it need an internet connection?

No. Korasa works fully offline and never sends your content anywhere.

Can I move my notes to another computer?

Export a project as a .korasa.json file — it includes every page and image — and import it on the other machine. You can also copy the whole data folder.

Can I print or share my pages?

Export any page or an entire project as an A4 PDF with sharp, selectable text, or save pages as PNG images.

Does it work with a drawing tablet or stylus?

Yes — the pen tool reads stylus pressure for natural-looking handwriting and sketches.