A new open-source desktop app called Orchestrator lets you run multiple Claude Code agents simultaneously in split panes, borrowing the layout model from tmux (the terminal multiplexer that developers use to tile multiple shell sessions in one window).
Each agent gets its own isolated pane with a separate working directory and context. You can watch all of them at a glance - one agent refactoring a backend service, another writing tests, a third updating documentation - without alt-tabbing between terminal windows.
The layout engine uses binary space partitioning trees, the same data structure tmux uses internally to manage its splits. That means you can subdivide horizontally and vertically, resize panes, and manage five or six agents on screen at once without the interface becoming unusable.
The timing makes sense. Claude Code users are increasingly running parallel agent sessions - one for research, one for implementation, one for review - and managing them across separate terminals gets messy fast. Orchestrator is a direct answer to that workflow pain.
The project is early-stage and available on GitHub. It solves a narrow problem, but it is a problem that anyone running more than two Claude Code sessions at once has felt. If you are already using Claude Code as your primary coding tool and find yourself juggling terminal windows, this is worth a look.