Calyx

Calyx is a native macOS terminal built for running several AI coding agents side by side. It hosts Claude Code, Codex, OpenCode, Hermes, Grok and pi in ordinary terminal panes, then adds a layer that tracks what each agent is doing, collects the prompts they raise, and routes code review back to the pane that wrote the code. It is aimed at developers who keep many agent sessions open at once and lose time switching between windows to check on them. An Agents Sidebar lists every connected agent as working, blocked, idle or done, with unread badges for panes that spoke while you were elsewhere. Permission prompts from Claude Code and Codex, and tool calls from Grok and pi sessions, arrive in a single approvals panel, and auto approval is a separate opt in. Panes running subagents expand into child rows showing each one's state and current tool. A mission map lays every pane out as a card and draws lines when one agent messages another. The Git sidebar shows working changes, staging and history per repository, and lets you comment on individual diff lines and send the whole review to an agent pane. Optional daemon backed sessions survive a quit or crash and can be reattached, including on SSH hosts. Rendering uses libghostty on Metal, it reads your existing Ghostty config, and panes, captured output and browser tabs are exposed to agents over MCP and a bundled command line tool. Calyx is free and MIT licensed. It installs as a direct download or through Homebrew, and no paid plan is published. The current release requires macOS 26 Tahoe or later on Apple Silicon, so Intel Macs and older macOS versions are not supported.