Znote

Write a few lines of JavaScript in a note, run the code block right there with the bundled libraries, and turn the result into a chart.

That is the kind of task Znote handles.

Znote is a local note-taking tool for coding and data visualization that keeps your files private on your own machine.

You can write and edit text files, organize them with folders and tags, and capture meetings.

The free plan covers personal writing use.

The Pro license costs 35 EUR once, not a subscription, and is valid for all your computers.

It adds audio transcription, more themes, NPM and CDN package installs, PDF export, export as script, file locking, a connection to remote AI and one year of updates.

A separate publishing add-on, billed yearly per team, lets you share notes and reports online, privately or publicly, and invite members.

Priority email support comes with it.

If you want a notebook that runs code, the free tier is a fair place to start.