Organize all your Claude Code projects

One project. One window. Everything in it.

Atrium is a Mac editor built around Claude Code. Your files, your Claude sessions, your terminals and a real browser live together, one app per project, so nothing gets lost.

Download for Mac See how it works

Version 0.1.0 · 5.8 MB · macOS 26 · Apple silicon · Free

Every project is its own app.

Name it, pick a colour and an icon. Each project shows up in your Dock and in ⌘⇥ as its own app, right next to Safari and Notes, and ⌥⇥ flips between the ones you have open.

Atrium with the Portfolio Site project open in its own red window: files, code, the site in a browser tab and Claude in the console.
  • Terminal
  • Safari
  • Notes
  • Preview
  • Atrium
  • ⌘⇥Your projects sit next to Safari and Notes
  • ⌥⇥Jumps between projects only
  • ClickTap a project in the Dock to bring it forward

Make each one yours.

Give a project a name, a colour and an icon. Atrium builds its app icon from them, so you can spot it in the Dock.

Icon
Colour

Why Atrium exists

Five terminals. Three Claude sessions. A browser somewhere else. Files in another app. And no idea which window belongs to which project.

Atrium puts each project in one place, so you always know where things are.

Today

Windows everywhere

Claude in one terminal, the dev server in another, the page in a browser tab you can't find.

With Atrium

One window per project

Files on the left, code and the page side by side, Claude and terminals underneath. Same place every time.

Inside, one window holds it all.

Inside each project's app, its files, Claude, terminals and a browser share one window.

Your page beside your code

Files, editor, Claude, terminals and a browser share one window. Split view puts them side by side.

Drag the divider. It works the same way in the app.

Prefer a chat to a terminal?

Atrium also has a native Claude chat. It shows images and video, talks with you by voice and runs every slash command.

⌥⌘Jopens one beside your terminal.

Claude uses the browser too

Claude's links open inside Atrium. It can open pages, click, type, take screenshots and read console errors.

Know where things are

Several Claudes can work at once. Atrium tells you which one needs you.

  • A note when Claude asksIn any project. Hover to read the question, click to jump to it.
  • ⌥⇥ for active projectsSwitch between the projects you're working in, and only those.
  • Menu bar panelRunning projects, working Claudes, live localhost servers and who's waiting.
  • Desktop widgetThe same picture on your desktop, always in view.
  • Raycast commandsSearch Claude Projects and New Claude Project, from anywhere.
  • Git in the file listYour branch, and a dot on every file you haven't committed yet.
Japan Trip DeckClaude finished: 14 slides ready

A note when Claude asks. In any project. Hover or tap to read the question, click to jump to it.

⌥⇥ for active projects. Switch between the projects you're working in, and only those.

Menu bar panel. Running projects, working Claudes, live localhost servers and who's waiting.

Desktop widget. The same picture on your desktop, always in view.

Raycast commands. Search Claude Projects and New Claude Project, from anywhere.

Git in the file list. Your branch, and a dot on every file you haven't committed yet.

Feels like a Mac app, because it is one.

Up to 240 hertz

Atrium runs at your display's full refresh rate. SF fonts, real materials and spring motion, dark by default, with a colour for every project.

Try a colour
⌘J
Console in, console outDrag terminals around, style each one, and keep Claude a keystroke away.
⌘\
Claude besideA new Claude pane next to this one.
⌘]
Shell besideA terminal, side by side.
⌘K
Full consoleGive the terminals the whole window.
⌘+
Zoom one areaFiles, editor, page or console, each on its own.
Stays fresh

Atrium updates itself

Choose Check for Updates in the app menu to get the newest version. No need to download it again.

Richard Pines

Made by one person who uses it all day

Built by Richard Pines for the way he works with Claude every day. If it helps you too, he'd love to hear about it.

@richardvisuals on Instagram (opens in a new tab)

Give every project
a home.

Free for Mac. Open a folder and it becomes its own app, with Claude already inside.

Download for Mac

Version 0.1.0 · 5.8 MB · macOS 26 · Apple silicon · Free