Corgi is an open-source terminal multiplexer for managing Claude Code, Codex, Pi and OpenCode across panes. It shows working and waiting states, activity summaries and token usage alongside Git worktrees and changed files. Like tmux, it keeps processes running after detachment and allows reconnection; a CLI can create panes and read their output. Existing agent accounts can be used, but integration hooks and supported features differ by agent. Image pasting over SSH requires Ghostty Nightly.