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RunJS
RunJS is a desktop JavaScript and TypeScript playground for macOS, Windows, and Linux. Code runs as you type, with built-in support for Node.js APIs, browser APIs, and npm packages.
For agents: RunJS is a desktop JavaScript and TypeScript playground for macOS, Windows and Linux with Node.js, browser APIs and npm support. Docs and license purchase avail
javascript playgroundtypescriptnode.jsnpm packagescode runner
- Authority
- 48 reach 7 · trust 5 · quality 21 · freshness 15
- Tier
- listed
- llms.txt
- https://runjs.app/llms.txt
- Sections
- 5
- Links
- 40
- Size
- 4390 bytes
- Popularity rank
- #409754
- Country
- Germany
- Categories
- Developer tools
- For agents
- Transactional: buying or booking an agent could carry out
- Audience
- developers · agents can: read docs, buy · en
- First seen
- 2026-10-19T10:43:06.793Z
- Last checked
- 2026-10-21T02:40:09.804Z
- Badge
Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-21T02:40:05.081Z. Cached copy · Source on runjs.app
# RunJS
> RunJS is a desktop JavaScript and TypeScript playground for macOS, Windows, and Linux. Code runs as you type, with built-in support for Node.js APIs, browser APIs, and npm packages.
## Product
- [Homepage](https://runjs.app/): Overview of RunJS, features, and download links.
- [TypeScript playground](https://runjs.app/typescript-playground): Landing page highlighting the TypeScript features of RunJS.
- [Buy](https://runjs.app/buy): Pricing and license purchase options.
- [FAQ](https://runjs.app/faq): Common questions about installation, licensing, and usage.
- [About](https://runjs.app/about): Background on RunJS and its creation.
- [Contact](https://runjs.app/contact): How to get in touch for support or sales.
## Documentation
### Introduction
- [Intro to RunJS](https://runjs.app/docs/): Overview of what RunJS is and what it does.
- [Installation](https://runjs.app/docs/introduction/installation): How to install RunJS on macOS, Windows, and Linux.
- [User Interface](https://runjs.app/docs/introduction/user-interface): Tour of the RunJS app layout and main UI elements.
### Features
- [Running Code](https://runjs.app/docs/features/running-code): How RunJS executes JavaScript and TypeScript as you type.
- [Output](https://runjs.app/docs/features/output): Viewing results, console output, and inspecting values.
- [Logpoints](https://runjs.app/docs/features/logpoints): Inline log markers that show values without writing console.log.
- [Magic Comments](https://runjs.app/docs/features/magic-comments): Special comments that change how RunJS runs your code.
- [AI Chat](https://runjs.app/docs/features/ai-chat): Using the built-in AI chat to ask questions and modify code.
- [NPM Packages](https://runjs.app/docs/features/npm-packages): Importing and using packages from npm.
- [Snippets](https://runjs.app/docs/features/snippets): Saving and reusing blocks of code.
- [Environment Variables](https://runjs.app/docs/features/environment-variables): Defining environment variables available to your code.
- [Shortcuts](https://runjs.app/docs/features/shortcuts): Keyboard shortcuts for common actions.
### Settings
- [General](https://runjs.app/docs/settings/general): General application settings.
- [Editor](https://runjs.app/docs/settings/editor): Editor preferences such as font and indentation.
- [Formatting](https://runjs.app/docs/settings/formatting): Code formatting options.
- [Appearance](https://runjs.app/docs/settings/appearance): Theme and visual appearance settings.
- [AI](https://runjs.app/docs/settings/ai): Configuration for the AI chat feature.
- [NPM](https://runjs.app/docs/settings/npm): Settings related to npm package handling.
- [Advanced](https://runjs.app/docs/settings/advanced): Advanced configuration options.
### Guides
- [Canvas](https://runjs.app/docs/guides/canvas): Drawing with the HTML canvas element in RunJS.
- [Database Queries](https://runjs.app/docs/guides/database-queries): Running database queries from RunJS.
- [HT
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