A server in Rust
Each PTY is held as a line buffer rather than a process. Opening more terminals does not open more processes, which keeps memory use low.
buster7
A lightweight environment for leading several coding agents.
Claude Code and Codex are yours to run side by side, on a mother ship built for the developer who runs them. buster7 holds no model of its own, and never takes command of your agents.
- In development
- macOS / iOS
- Rust and Flutter
- 21 MCP tools
Why we built it
Run several agents at once and the tools in front of you grow heavier, and the waiting grows longer. If handing over more work only makes everything slower, handing it over loses its point. The problem, we decided, was not a missing feature but the structure, so we rebuilt it from the ground up.
| buster7 | |
|---|---|
| Memory | 147 MB / 2 processes |
| Of which the backend | Rust 6.1 MB |
Measured with 8 sessions, 3 claude processes, and one session under heavy load.
Structure
A client in Flutter
It draws through the native GPU. One session per connection, with binary frames carried through unmodified.
Sessions live on the server
Sessions are held on the server. Losing the connection does not stop the work, and you can connect from a Mac and a phone at once.
What it does
A board that shows every state
Working, waiting and finished sessions are visible at a glance, laid out as a kanban board.
Terminal and chat, side by side
Switch between a terminal that drives the CLI TUI as it is, and a chat view drawn from structured messages.
One tab, one session
Each tab is one session. Closing a tab asks first, so a session is never ended by mistake.
A layout for each kind of input
Touch and mouse get their own skeletons. Panes fold away when the window is narrow.
Open files from the terminal
A file explorer sits beside the terminal. Click a path printed in the terminal to open it.
A CLI and 21 MCP tools
Agents drive buster7 with the b7 command, or through 21 tools exposed over MCP.
Where it stands
You can connect from the macOS client today (the iOS app is not distributed yet).We use buster7 to build buster7.
- 134Rust tests (pass)
measured 2026-09-22 - 121Flutter tests (pass)
measured 2026-09-21 / 2 more skipped - 21MCP tools
measured 2026-09-22
A free build for macOS on Apple Silicon is available now. Unresolved problems remain, including terminal drawing and Japanese input.
Get started
Download
The zip includes the app, local server, and CLI. Launch the bundled server to get started.
macOS (Apple Silicon / M series) · 13 MB
macOS will show an unverified developer warning on first launch. Right-click the app and choose “Open”.
The user documentation explains how to use it.