Free & open-source add-in for OneNote

Make OneNote work the way you do

OneMore adds the editing tools, formatting shortcuts, and organization features that OneNote leaves out — without slowing you down or costing you a thing.

Everything OneNote should have shipped with

A few hundred small conveniences, all built into one add-in.

Command Palette

Use the Command Palette to access 200+ commands or the Quick Palette to apply styles, without leaving the keyboard.

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Styles & formatting

One-click text styles and table styles, custom color themes, and consistent formatting across every notebook.

Table of contents

Auto-generate a table of contents for any page, section, or notebook — kept in sync as you edit.

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Code & Markdown

Paste Markdown straight into OneNote, or drop in a syntax-highlighted code box for snippets.

Favorites & hashtags

Pin your most-used pages as Favorites, and tag notes with inline #hashtags to find them again instantly.

Image editing & diagrams

Crop, rotate, and adjust images without leaving OneNote — plus render Mermaid and PlantUML diagrams straight from code.

Snippets

Save any block of content as a reusable snippet, then drop it into any page whenever you need it again.

Free & open source

No subscription, no telemetry opt-in required, no catch. Built in the open on GitHub since 2018.

Contact Us

Have a question, a comment, or a really good suggestion — or just want to say hi? Contact us.

Sponsor

OneMore is a hobby project, free of charge. Please consider a small donation to support ongoing development — click here.

Ready to get more out of OneNote?

Free, open source, and installs in under a minute. Windows only.