Coterm
Coterm: A focused open-source workspace for shared terminal and coding-agent sessions. Ranked #15 of 26 in Pair Programming Software by our editors (7.3/10); pricing: Free plan; best for open-source macOS terminal collaboration.
At a glance
- Editor score7.3 / 10
- PricingFree plan
- Best forOpen-source macOS terminal collaboration
- Free planYes
- Paid fromFree
- Facts checked20 Sep 2026
Where it wins
- Real-time self-hosted rooms for shared coding-agent sessions
- Native macOS workspace with tabs, panes, and browser views
- CLI and Unix socket APIs support local automation
Where it doesn't
- Primary application is limited to macOS
- iOS companion is beta
- No screen sharing or verified audio sharing
Our verdict on Coterm
Coterm is a native macOS terminal and browser workspace for developers who work with AI coding agents and want collaborative pair programming around a shared session. It combines multiple workspaces, tabs, split panes, browser panes, terminal notifications, and unread state in one application. Two developers can join the same live room and work around one coding-agent session. Supported terminal-based agents include Claude Code, Codex, OpenCode, Gemini CLI, Aider, Amp, and Cursor Agent. An iOS companion is also available in beta.
The product’s strongest distinction is its self-hosted collaboration model. Coterm provides real-time collaboration rooms through an optional self-hosted backend, so collaboration infrastructure is managed by the users. Preview sharing extends the workspace beyond terminal output, while notifications and unread state help collaborators track activity. The application is free and open source, making it suited to teams and individuals that want inspectable software and control over collaboration infrastructure rather than a conventional hosted service.
Coterm also has a narrow platform focus. The primary application is macOS, with iOS available as a beta companion, so it is not a general cross-platform pair programming choice. Its automation API, native terminal workspace, and support for several coding-agent tools will appeal to macOS developers building terminal-centered workflows. However, teams that require screen sharing or verified audio collaboration should choose a product designed around those communication features. Coterm is a strong fit for open-source, self-hosted terminal collaboration, but a less suitable choice for broader platform coverage or traditional video-based pairing.
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Coterm pricing
Coterm fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Editor support | Not verified |
| Max participants | Not verified |
| Voice audio | Not verified |
| Screen sharing | No |
| Integrated chat | Not verified |
| Self-hosted option | Yes |
| Deployment | Desktop, Self-hosted, Mobile |
| Platforms | macOS, iOS |
| Support | Docs |
| Built for | Solo, Small business, Mid-market (editorial estimate) |
| Pricing | Free plan |
| Website | coterm.cc |
| Facts checked | 20 Sep 2026 |
Alternatives to Coterm
- CodeTogetherA strong fit for teams that collaborate across IDEs, terminals, and development servers.9.3
- DucklyAffordable IDE-to-IDE pairing with sharing, calls, and terminal collaboration.9.2
- DrovioA flexible remote collaboration tool for pairing in any IDE or app.9.0
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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