Termio

Termio is a native Mac application that the vendor calls a terminal first agentic development environment. It is built for developers who run several AI coding agents side by side, each in a real terminal, and want to switch between them instantly. The app supports Claude Code, Codex, OpenCode, Pi, Amp, Cursor, Copilot, Kimi, Antigravity, Crush and Grok. Each agent's own interface renders natively in a pseudo terminal, so slash commands, model pickers, MCP servers and status bars behave exactly as they do in any other terminal rather than being re implemented. Termio ships a skill to supported agents so that one agent can list, spawn and answer the sessions running beside it, using a termio sessions command. Agents report status back to the app, and launching an agent can come with its own worktree and session resume. The vendor states that nothing leaves the machine. Termio requires macOS 14 or later and is offered as a download for Mac. The site does not publish pricing, and no paid plans are listed.