Edna, note taking app for developers

In plain words

Edna is a browser-based note-taking app designed for developers and power users. It supports markdown, plain text, and code with a minimalist interface that prioritizes writing space. Notes can be stored locally in the browser or on disk, and optionally encrypted with passwords. The app combines features from Obsidian and Notational Velocity, requiring no installation while keeping data private and secure.

written from the facts on this page · September 2026

From the sources

Edna is a note taking application with super powers

In the maker’s words, at launch

I took a small break from coding SumatraPDF and wrote a note taking application that is perfect for me: https://edna.arslexis.io/ Edna is a note taking app for developers and power users. A cross between Obsidian and Notational Velocity. Markdown, plain text, code, works in browser so no installation…

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  Minimalist editor that lives in browser, stores everything in the URLDec 2025 · github.com · ▲468

  I wanted to see how far I could go building a notes app using only what modern browsers already provide – no frameworks, no storage APIs, no build step. What it does: Single HTML file, no deps, 111 loc Notes live in the URL hash (shareable links!) Auto-compressed with CompressionStream Plain-text editor (contenteditable) History support Page title from first # heading Respects light/dark mode No storage, cookies, or tracking The entire app is the page source. https://textarea.my/

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• RT
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  Thank you for your comments, just some context: - The app is available for iOS, Android, Windows, Mac, Apple Vision Pro, and the Web. - The Web version is implemented as a Progressive Web Application that is very responsive, local first, offline first, can be installed, and is entirely free to use. - Native (hybrid) versions do not require subscription fees and have small one-time payment. - You can store your notes in Git using any Git provider such as GitHub, GitLab, or Bitbucket. However, it has the best built-in integration with GitHub. Self-hosted scenarios like Gitea are also…

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