A GPUI experiment in native agent multiplexing.
Run coding agents in parallel. Keep every terminal, decision, and result in one durable workspace.
SuperPlexr is an experimental desktop app built with Rust and GPUI for launching, supervising, and reviewing multiple terminal-based coding agents. Think tmux for agent work, with Missions, attention, durable state, and verification built in.
This is a GPUI experiment and source preview, with rough edges and ongoing changes.
| Parallel-agent problem | SuperPlexr |
|---|---|
| Too many terminal windows | One Mission with a Session sidebar and terminal waterfall |
| Hidden blockers | Waiting and attention states stay visible |
| Lost work after closing a window | Runtime-owned PTYs and deterministic reattach |
| Competing attempts | Run graph, candidates, evidence, and review |
| Unclear control | Explicit human and agent Control leases |
Use named engine drivers to connect the coding-agent CLIs you already run. SuperPlexr stays local by default and does not require a cloud service.
- Mission tabs organize work by outcome.
- Session sidebar shows working, waiting, idle, and finished agents.
- Terminal waterfall keeps several live terminals visible.
- Command deck makes navigation and actions keyboard-first.
- Focus mode expands one Session without losing its Mission context.
- Review flow connects candidates, checks, evidence, and decisions.
Command deck |
Focus mode |
Experimental binaries for macOS and Linux (x86-64 and ARM64) are published by the release action. Each platform archive contains all eight executables; macOS also has an app bundle. See Releases for available builds and release notes for requirements and limitations.
SuperPlexr 0.1.0 is a source preview. The macOS build is usable today. Linux
desktop code is present, with Wayland, X11, and packaging release gates still open.
Requirements: macOS 13+ or Linux development libraries, Rust 1.97.1, and Zig 0.16.0 for the pinned Ghostty dependency.
git clone https://github.com/debpalash/superplexr.git
cd superplexr
cargo run -p superplexr-desktopThe desktop starts its local runtime automatically and reconnects to durable Sessions when reopened.
| Action | macOS | Linux |
|---|---|---|
| Command deck | Cmd+K | Ctrl+K |
| Next attention | Cmd+Shift+A | Ctrl+Shift+A |
| New Mission | Cmd+T | Ctrl+Shift+T |
| New Session | Cmd+N | Ctrl+Shift+N |
| Focus mode | Cmd+Shift+Enter | Ctrl+Shift+Enter |
flowchart LR
A[Coding-agent CLIs] --> R[Local runtime]
D[Native GPUI desktop] <--> R
R --> P[Durable PTYs]
R --> M[Missions and Runs]
R --> E[History and evidence]
The runtime owns processes and state. The desktop can restart without killing agent work. CLI, TUI, MCP, browser observer, and remote clients use the same runtime.
cargo run -p superplexr-cli -- list
cargo run -p superplexr-cli -- status
cargo run -p superplexr-cli -- launch "Ship the release" \
--task "Fix the failing tests" --task "Review the README" --checkout
cargo run -p superplexr-cli -- attention
cargo run -p superplexr-cli -- terminal-text "$SESSION_ID"
cargo run -p superplexr-cli -- terminal-wait-exit "$SESSION_ID" --compact
cargo run -p superplexr-cli -- mission-brief "$MISSION_ID"
cargo run -p superplexr-cli -- doctorlaunch creates a Mission and starts each explicit task through its configured engine.
attention, terminal-text, compact waits, and mission-brief keep agent reads short.
doctor reports bounded cache usage and cleans only the workspace build cache when asked.
Browser observer preview
The browser observer is a scoped secondary client for watching or sharing a Session.
| Area | State |
|---|---|
| macOS source build | Usable preview |
| Linux source | Implemented; native release validation open |
| Signed installers | Not published |
| Production readiness | Pre-release |
See the release evidence ledger and completion matrix for exact passed and open gates.
Contributions are welcome. Read CONTRIBUTING.md, report security issues through SECURITY.md, and use SuperPlexr under the MIT License.