Your browser should be your IDE.
Radius is a browser where you can run coding agents in parallel, right next to your PRs, docs, terminals, and localhost servers.
Use Claude Code, Codex or Cursor Agent directly inside Radius. No new subscription.
Code directly in the browser, with your agents.
Everything is a tab.
Your agent runs in a tab. So does the terminal, the diff viewer, and every PR, doc, dashboard, and localhost server you keep open. One window holds all of it, so you never lose context switching back to the IDE.
Spaces for projects. Groups for worktrees.
Radius automatically creates new spaces for your different projects, and organizes your worktrees into tab groups. Keep all of your context in one place with a tab group for each worktree.
Script your setup.
Radius tabs and groups are completely scriptable through Unix commands. Open tabs, arrange splits, and focus the right surface with Radius CLI. See the docs to create setup commands for worktrees
Privacy that keeps you in control.
Local-first
Worktrees, sessions, and agent state live on your machine — not on ours.
Your credentials
Agents authenticate with their providers directly. All your keys are stored locally.
Your terms
Opt out of product analytics at any time. Your privacy preferences are always yours to set.
Good to know.
- What does Radius cost?
- Radius is free. Connect the Claude, Codex, or Cursor account you already use—Radius adds no additional subscription.
- Which agents does it work with?
- Claude Code, Codex, and Cursor, using the subscription you already have. Agents authenticate with their providers directly.
- What platforms are supported?
- Just macOS for now. Download for Apple Silicon or Intel.
- Is Radius Chromium-based?
- Yes. Radius is built on Chromium, so sites and web apps behave like they do in a modern Chromium browser.
Make the browser your IDE.
Download Radius, connect the agent you already use, and start running work in parallel. Free, on macOS.