atrium vs Conductor
Parallel agents, plus the room they live in.
Conductor runs isolated agents and merges their diffs. atrium runs the same parallel agents — then wraps each one in a full workspace: terminal, editor, browser, tasks, and notes, in a room that survives crashes, reboots, and reopenings.
atrium
atrium is the workspace around every coding agent you run. Each task launches into its own worktree-isolated room — terminal, editor, browser, tasks, notes — and the whole room persists and resumes across crashes and reboots.
Conductor
Conductor runs Claude Code, Codex, and Cursor in parallel on your Mac. Each task gets its own isolated workspace, branch, terminal, diff, and a review-and-merge path with built-in PR and CI checks.
Feature by feature
| Feature | atrium | Conductor |
|---|---|---|
| Running agents | ||
| Parallel agents in isolated git worktrees | Yes — one room per task | Yes — one workspace per task |
| Supported coding agents | Claude Code, Codex, Gemini CLI, Cursor CLI, Antigravity, OpenCode, Pi | Claude Code, Codex, Cursor |
| Open adapter SDK (bring your own CLI) | Yes — MIT-licensed, any hook-capable CLI | — |
| Agent-to-agent messaging & coordination | Agents read each other's panes and message in-workspace | — |
| Reviewing the work | ||
| Diff & code review | Monaco side-by-side diffs, comments agents can act on, scales to thousands of files | Built-in diff viewer |
| One-click PR + inline CI checks | Via terminal or browser pane | Built-in PR + checks flow |
| The workspace | ||
| Built-in terminal per task | Yes | Yes |
| Full code editor with LSP | Monaco — LSP, git blame, diagnostics | Diff + file view |
| Real browser pane | Yes — Chromium pane with DevTools | — |
| Task cards that launch agents | Yes — fire a task into a fresh worktree | — |
| Notes — Markdown, Excalidraw, Canvas, HTML | Yes — a notepad with four note types | — |
| Voice dictation | Yes — native macOS speech-to-text | — |
| Scriptable CLI for the whole app | Yes — drive every pane, room, agent, and task | — |
| Layout: rooms, wings, docked residents | Tiling mosaic, parallel wings, docked panes | Workspace list + single active view |
| Memory & recovery | ||
| Full session resume after crash / reboot / quit | Yes — panes, scrollback, agent sessions | Not a stated feature |
| Cross-session timeline & full-text search | Timeline, Vault search, Observatory map | Per-workspace |
| Foundation | ||
| Platform | macOS (Windows / Linux on roadmap) | macOS (Windows waitlist) |
| Price | Free in early access — bring your own agent subscription | Free — bring your own agent subscription |
Comparison reflects publicly documented features as of June 2026. Conductor's feature set may have changed since — check their site and tell us if a row is out of date.
Where atrium pulls ahead
It runs every agent, not three.
Conductor runs Claude Code, Codex, and Cursor. atrium runs those plus Gemini CLI, Antigravity, OpenCode, and Pi — and ships an open, MIT-licensed adapter SDK, so any CLI with hooks becomes a first-class agent. Your stack isn't locked to a fixed list.
The room survives the crash.
Close the lid, reboot, or crash mid-run — atrium brings the whole room back: panes, scrollback, and live agent sessions. The work doesn't start over just because the app did.
Review the work, don't just diff it.
atrium's source-control pane is Monaco side-by-side diffs that scale to thousands of files, with comment threads anchored to the code that the agent can read and act on. Review isn't a separate tab — it's a loop with the agent still in the room.
More than a chat and a diff.
A task in atrium isn't only a conversation and a changeset. It's a tiling room with a terminal, a real browser, an LSP editor, task cards, notes, and voice — the same surface you'd use without an agent, with the agent working inside it.
And the rest of the workspace
Everything above ships in the same app — these come with it.
Activity sidebar
Every running agent across the workspace, with live status and one-tap messaging.
Skills & named agents
Reusable runbooks and pre-configured agents, launched with +skill and ++agent mentions — across any adapter.
Snapshots & crash recovery
Content-addressed workspace snapshots; on an unclean exit, pick exactly which rooms and panes to restore.
Observatory
A navigable 3D night-sky map of every workspace you've ever opened — galaxies, stars, supernovae.
Markdown editor with inline comments
WYSIWYG markdown with comment threads anchored to the text, plus a source toggle and book view.
Repo search
Full-text and regex search across the project, grouped by file, jump to any line.
Themes
Dracula, Nord, Catppuccin, Tokyo Night, Gruvbox, and more — or drop in your own JSON theme.
Image, diff & snapshot viewers
Read-only panes for images, side-by-side code, and semantic snapshot diffs.
Where Conductor fits better
Conductor is built tightly around one loop: fan out parallel agents, review each diff, open a PR with inline CI checks, merge. If that's the whole job — and you live in Claude Code, Codex, or Cursor — its focus and packaged merge flow are a real advantage. atrium is a broader workspace, which means more surface to learn. Pick the tool that matches how much room you want around the agent.
Questions
Is atrium a Conductor alternative?
Yes. Both run multiple coding agents in parallel, each isolated in its own git worktree, with diff review built in. atrium adds full session resume, a wider set of adapters with an open SDK, and a complete workspace — terminal, LSP editor, browser, tasks, notes, voice, and cross-session history — around every agent.
Does atrium run Claude Code in parallel like Conductor?
Yes. Every task launches into its own worktree-isolated room, so branches don't collide and agents don't fight over the same files. You can run many at once and review them side by side.
Which agents does atrium support that Conductor doesn't?
Conductor supports Claude Code, Codex, and Cursor. atrium adds Gemini CLI, Antigravity, OpenCode, and Pi, and its adapter SDK lets you wire up any hook-capable CLI agent yourself.
Can I review and merge agent changes in atrium?
Yes. The source-control pane gives you Monaco side-by-side diffs that scale to thousands of files, staging, branches, and comment threads anchored to the code that the agent can read and act on. PRs and CI checks run through your terminal or a built-in browser pane.
Is atrium free like Conductor?
Yes — free during early access. Like Conductor, atrium uses the agent subscriptions you already have. Your code and your agents' traffic never route through atrium's servers; agents talk directly to their own providers.
Do I have to switch from Conductor to try atrium?
No. atrium runs the same agents against the same repos. Point it at your project, launch a room, and nothing about your git workflow changes.
Give your agents a room that lasts.
Free during early access. Bring the agents you already pay for — your code never leaves your machine.
Download atrium for macOS