I built a Windows app where multiple Claude Code agents run in one window and actually talk to each other (no tmux/WSL)

Why this exists: Claude Code's split-pane agent teams need tmux or iTerm2, so on Windows you're kind of stuck unless you go down the WSL / terminal-multiplexer route. I just wanted to watch a few agents work together at the same time without all that, so I ended up building it.

It's called overhive. What it actually does:

- Spawn multiple Claude Code agents, each in its own pane with its own working folder, model and effort level.

- They sit in a live tiled grid so you can keep an eye on all of them at once. Double-click a pane to blow it up, Esc to go back.

- They can actively talk to each other. There's a tiny local MCP server wired into every agent, so they share a set of tools: list_agents, send_message, check_inbox, plus spawn_agent / stop_agent. In practice that means a "lead" agent can delegate to workers, the workers message their results back, and a new agent can even pull more agents into the hive on its own. Every time one messages another you see a little packet fly between the tiles.

- The talking actually happens live. An idle agent would normally just sit at its prompt and never check its inbox, so overhive nudges it to go read new messages, instead of the conversation stalling until you poke it.

Who it's for: Windows people who use Claude Code and want a visual way to run more than one agent at a time and have them coordinate. (It also builds and runs on macOS/Linux for development, but it's Windows-first on purpose.)

Cost: free and open source (MIT). No account, no telemetry, nothing to pay. You just need the official claude CLI on your PATH, since it drives real claude processes under the hood.

My relationship to it: I made it. It's my own project and this is the first time I'm putting it out there.

Fair warning, it's still early (v0.2.3) so there are rough edges, and the "is this agent waiting for input?" detection is pretty naive right now. Prebuilt Windows installer and the source are here:

https://github.com/rctom16-bit/Overhive

Happy to answer anything, and I'd genuinely like to hear what would make it actually useful in your setup.