# massCode (open-source notes and writing app)

> massCode is a free, open-source notes and writing app for Windows, macOS and Linux. A free, open-source developer workspace. Snippets, notes, HTTP requests, calculations, and dev tools in one local-first app. It has 7,048 GitHub stars and is released under the AGPL-3.0 license.

A free, open-source developer workspace. Snippets, notes, HTTP requests, calculations, drawings, and dev tools in one local-first app.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/massCodeIO/massCode |
| Platforms | Linux, macOS, Windows |
| Interface | desktop GUI |
| GitHub stars | 7,048 |
| License | AGPL-3.0 (open source) |
| Replaces | n/a |
| Language | TypeScript |
| Website | https://masscode.io |
| Official | yes (published by the project behind the app) |
| Category | Notes & writing |
| Latest release | v6.1.0 (Oct 8, 2026) |
| Last commit | Oct 8, 2026 |

## Install

Download a build for your system from the project's releases (https://github.com/massCodeIO/massCode/releases) or website, or build it from source by following the README.

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Canonical page: https://appsgit.com/desktop-apps/masscode
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