Coterm vs Hopp

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.

Hopp is an open-source screen-sharing and remote pair-programming app for developers and engineering teams. Participants can control another person’s computer with keyboard and mouse, with stated latency under 100 ms; rooms hold up to 10 people. Screen sharing defaults to 4K and can cover any application on screen. Shared cursors, drawing, and annotations support collaborative work, while the app also advertises active noise-cancelling audio and a Slack integration for starting calls. Teams can self-host Hopp on their own infrastructure using the repository’s self-hosting guide and Docker Compose setup, or use Hopp Cloud for $15 a month, billed at $15 per user each month with unlimited calls. A dedicated single-tenant private cloud option is also available, with pricing by discussion. Listed platforms include macOS, Windows, web, and self-hosted use. Hopp lists a support guarantee of less than one day. Its privacy policy says it uses commercially acceptable safeguards but cannot guarantee absolute security.