From core.ai

Meet Phoenix Code, the AI editor that gets design as well as code.

core.ai builds AI-first tools for the people who build the web. Our flagship, Phoenix Code, is an open-source editor that understands your design as well as your code — with live preview, Git and extensions on every platform.

Get Phoenix Code

The core.ai flagship

Everything you need to build the web, in one editor

Claude Code
with Eyes

Phoenix gives Claude Code visual context, so it can see more than just code.

Responsive Preview

Preview phone, tablet, and desktop layouts with one click.

Markdown Editor

Edit Markdown like a document, not just plain text.

Terminal

Run commands without leaving Phoenix Code.

Design Mode

Edit directly on the page.

Lightning fast

A native, blazing-fast app on Windows, macOS and Linux.

AI with visual and
runtime context.

Most AI coding agents only read source code. AI in Phoenix Code looks at the rendered page too. It sees what the browser shows you, not just what the stylesheet or code implies.

Bring your own Claude login or key. Your code stays local.

There’s much more

Live preview, Git, terminal, design mode & more

Phoenix Code is free, open source, and packed with everything you need to build for the web — with AI that actually sees your page. Explore the full experience on phcode.io.

Get Phoenix Code

core.ai • Since 2020

We build the tools that build the web.

Phoenix Code is the official successor to Adobe’s Brackets — carrying a legacy that taught millions of developers their first line of code.

About core.ai →

We also steward Brackets

The classic open-source editor that started it all. We keep it available for the community while Phoenix Code carries the vision forward.

Visit brackets.io →