NitroIDE
Free, open-source browser IDE for HTML, CSS & JavaScript
FreeIDECodeOpen Source30 impressionslaunches Dec 111 comment
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>log in to commentHey everyone 👋 I'm the maker. We built NitroIDE: free, open-source browser IDE for HTML, CSS & JavaScript. I'd love your honest feedback, and I'm here all week to answer questions!
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NitroIDE is a free, open-source browser-based IDE for HTML, CSS and JavaScript that runs entirely client-side.
- for
- Web developers who need a zero-latency, privacy-focused frontend editor.
- pricing
- free
- license
- open source
- v25v25 — The Performance & Polish Updatea month ago
- v22.5NitroIDE v22.5 - The Growth Update7 months ago
Key features
- Zero-latency live preview — Instantly updates HTML, CSS and JS in the browser without reloading the iframe.
- Monaco editor with Emmet — Full VS Code-compatible editor with code snippets and syntax highlighting.
- Virtual file system & export — Manage multiple files in a draggable sidebar and download the workspace as a ZIP.
- Built-in JavaScript console — Native CLI for installing libraries, exporting code and inspecting objects in real time.
- React & CDN playground — Fetch any library from unpkg (e.g., React, Tailwind) directly in the UI.
- Device emulation — Toggle live preview between desktop, tablet and mobile breakpoints.
- Offline support — All functionality works without an internet connection, preserving privacy.
- JavaScript state visualizer — Bind variables to a global hook and watch their values update live.
Use cases
- Prototype a React component library with Tailwind directly in the browser.
- Debug complex JavaScript objects using the built-in state visualizer and console.
- Create and export a static website as a production-ready ZIP without any server.
- Teach HTML/CSS/JS with a zero-install environment for students.
NitroIDE vs alternatives
 NitroIDE |  Replit |  Visual Studio Code |  Cursor |  Zed | |
|---|---|---|---|---|---|
| Best for | Client-side web IDE with no server | Browser-based development with hosting | Full-featured desktop code editor | AI-enhanced coding | Performance-focused native editor |
| Pricing | Free | Subscription | Free | Subscription | Free |
| DevHunt upvotes | 1 | 0 | 0 | 0 | 0 |
| Launched | Dec 2029 | — | — | — | — |
- NitroIDE vs Replit: Runs in the cloud and offers deployment, while NitroIDE is fully client-side and free.
- NitroIDE vs Visual Studio Code: Desktop application with extensions; NitroIDE is a zero-install web IDE.
- NitroIDE vs Cursor: AI-assisted suggestions; NitroIDE focuses on zero latency without AI features.
- NitroIDE vs Zed: High-performance native editor with AI; NitroIDE provides a lightweight browser sandbox.
NitroIDE FAQ
Do I need to sign up or install anything to use NitroIDE?+
No, NitroIDE runs entirely in your browser with zero install and no signup required.
Is my code sent to any server?+
All code executes locally; NitroIDE does not transmit your files or telemetry.
Can I work offline?+
Yes, the IDE and its Monaco editor work offline and you can export your project as a ZIP.
How do I add external libraries like React or Tailwind?+
Use the built-in console command `install <library>` which fetches the package from unpkg.
What export formats are available?+
You can download the entire workspace as a production-ready ZIP or as a single bundled HTML file.
Is NitroIDE open source?+
Yes, it is MIT licensed and the source code is publicly available.
Summarized by DevHunt from nitroide.com · Oct 2, 2026. Details may change; check the official site.
