Devin alternative: run your own agents on your Mac, in the open

Devin from Cognition is an autonomous software engineer. You assign it a task from chat, Slack, Linear, Jira or GitHub, it works on its own cloud machine and comes back with a pull request. Since the Windsurf acquisition it also ships Devin Desktop, an editor, with a free tier, paid plans and team seats.

omux is the hands-on end of the spectrum. The Claude Code and Codex sessions run on your Mac, in your checkout, and you watch, answer and steer them in a sidebar that shows which one needs you. Nothing leaves your machine except what the agents themselves send. This page is for deciding how much of the loop you want to hold.

Download omux for macOS About Devin

At a glanceomuxDevin

Runs on your Mac, code stays local✓~

No account✓✕

Runs your own Claude Code and Codex✓✕

Agent status and Allow/Deny✓~

Split panes✓✕

Keeps working when your laptop is closed✕✓

Start tasks from Slack or Linear✕✓

Worktrees and pull requests✓✓

Free and open source✓✕

5 MBnative Swift app, no Electron
0accounts, credits or telemetry
6sessions side by side per project
MITfree and open source

omux with eight projects in the sidebar, a session running five subagents, a session waiting on Allow or Deny, two Codex sessions, and the Changes tab showing the diff — omux: projects and sessions on the left, the agent in the middle, its diff on the right. The session that needs you shows Allow and Deny.

Where the agent lives

Devin

Slack, Linear, GitHub or Devin Desktop

↓

Devin on Cognition's cloud machines

↓

Cognition account and plan

omux

One native macOS window, about 5 MB

↓

Claude CodeClaude CodeCodexCodexshell

↓

The real Claude Code and Codex, on your own plans

working needs you done

Side by side

	omux	Devin
What it is	A session manager for Claude Code and Codex on your Mac	A cloud software engineer, plus an editor (Devin Desktop)
Where the agent runs	On your Mac, in your checkout	Devin's cloud machines, or locally in Devin Desktop
Whose agent	Claude Code and Codex, with their own logins	Devin, on frontier and open models chosen in the app
Account and billing	None; you pay only your Claude or Codex plan	Cognition account; free tier, Pro, Max, Teams and Enterprise
Start a task	Type in the terminal, or use the omux CLI	Chat, Slack, Linear, Jira or GitHub
Many agents at once	✓ sessions under projects, split panes per project	✓ parallel cloud sessions, up to a plan limit
Agent status	Working, needs you, done, from the agents' own signals	A session list with progress in Devin's app
Answer a permission prompt	Allow and Deny from the sidebar	Devin asks in its chat when unsure
Subagents	Listed under the session with transcripts	Not exposed
Worktrees and pull requests	One worktree per session, PR status, merge and clean up	Devin opens the pull request from its machine
Code review	Changes panel with notes sent to the agent	Review the PR on GitHub; Devin can review too
Works while you're away	Sessions run as long as your Mac and omux are open	✓ cloud sessions continue
Editing code	✕	Devin Desktop
Price and license	Free, MIT	Proprietary; free tier and paid plans from about $20 a month

See omux in 37 seconds

From scattered terminals to one window: projects, status, Allow and Deny, subagents, panes and pull requests.

Pick Devin if

You want to hand off tasks from Slack or an issue tracker and get a pull request back without watching.
You want agents on cloud machines that keep going when your laptop is closed.
Your team wants one managed platform with seats, admin controls and analytics.

Pick omux if

You want to steer the work as it happens, in the terminal, with the diff beside the agent.
You already pay for Claude Code or Codex and don't want a second platform or account.
You want the code to stay on your machine, and the tool to be free and open source.

What omux does for every session

Projects with sessions under them, in a sidebar
Shows whether each agent is working, needs you or is done
Allow or Deny an agent's permission request without switching to it
Lists a session's subagents and opens their transcripts
Resumes each Claude Code and Codex conversation after a relaunch
Git worktree per session, with pull request status and merge
Files, Changes (diff with review notes) and Browser panels
Claude and Codex plan usage limits in the sidebar
Split panes: up to six sessions side by side per project, layouts saved
An omux command line: list, status, send, new, close and wait on sessions
macOS notifications with sound

Questions

Is omux an autonomous engineer?

No. It's the window you run your own agents in. Claude Code and Codex do the work; omux shows their status, permissions, subagents, diffs and pull requests, and keeps every session's conversation across relaunches.

Can I use omux and Devin together?

Yes. Many people hand well-specified tasks to a cloud agent and keep interactive work local. They don't overlap.

Does omux upload my code anywhere?

No. omux has no server and no telemetry. The agents talk to their own providers as they would in any terminal.

Also compared: Terminal alternative, tmux alternative, cmux alternative, Warp alternative, herdr alternative, T3 Code alternative, VS Code alternative, Cursor alternative, Antigravity alternative. Facts about Devin come from its public documentation as of 2026-11-02; if something is out of date, open an issue.