Coterm vs SubEthaEdit
Coterm
coterm.ccSubEthaEdit
subethaedit.netSide by side
| Figure | Coterm | SubEthaEdit |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| macOS | Yes | Yes |
| iOS | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 3 | 1 |
| Spec score · Pair Programming Software | 8.7 (#6) | 7.1 (#26) |
| Integrations | Automation hooks are documented for Claude Code, Amp, Cursor, Gemini CLI and Kiro CLI. | SubEthaEdit supports AppleScript and includes the `see` command line tool for using it as a system editor and piping text in or out. |
| License | Coterm’s source is published under the GPL-3.0-or-later license. | The project is distributed under the MIT license. |
Plans
In their own words
Coterm
Coterm is a native macOS workspace for two developers sharing a terminal, browser, and coding-agent session in real time. A live room lets both people join, follow terminal activity, see participants, and share previews. The shared workflow lists Claude Code, Codex, OpenCode, Gemini CLI, Aider, Amp, Cursor Agent, and other CLI agents. Coterm uses a Ghostty-based terminal with vertical tabs, a notification panel, and a socket control API. A CLI and Unix socket expose programmatic commands, while integration hooks can be configured for Claude Code, Amp, Cursor, Gemini, and Kiro CLI. The Mac app runs locally without a Coterm-hosted account service. Collaboration components can run in the user's Cloudflare account. Installation is available through DMG or Homebrew on macOS 14.0 or later, for Apple Silicon and Intel. An iOS companion is in beta. Coterm is free under GPL-3.0-or-later.
SubEthaEdit
SubEthaEdit has no write-up on Specifiction yet; its figures are above.