RMUX
What it is
RMUX is a free, open-source terminal multiplexer written in Rust that keeps shells under a local daemon. RMUX 0.10.0 provides a tmux-compatible surface of 90 commands for persistent sessions that can be detached and reattached. Its Rust, Python, and TypeScript SDKs support automation across sessions, windows, and panes, including sending input, waiting for output, capturing structured snapshots, and receiving pane events. The Python and TypeScript SDKs require the RMUX binary to be installed first. Web Share creates browser links to a pane or session while the shell remains on the user's machine. Links can grant operator or read-only spectator access, with separate pairing PINs enabled by default; terminal updates are encrypted and decrypted in the browser. Sharing options include private Tailscale access, public SSH tunnel presets, and user-provided ingress URLs. The Web Share frontend can be self-hosted. Default control uses local IPC, and browser sharing or remote access requires explicitly starting Web Share. RMUX is dual-licensed under MIT and Apache-2.0.
For and against
For
- Persistent sessions support detach and reattach
- Official SDKs for Rust, Python, and TypeScript
- Browser links offer operator or spectator access
- Web Share frontend can be self-hosted
Against
- Python and TypeScript SDKs require the binary
- Browser sharing requires explicitly starting Web Share
- No plugins or extensions
The verdict
RMUX combines persistent local sessions with SDK automation and optional browser sharing. Check the binary requirement for Python and TypeScript SDKs and the explicit setup needed for sharing.
Who it suits
RMUX suits people who want persistent local terminal sessions, SDK-based automation, or browser sharing for a pane or session. Python and TypeScript automation requires the RMUX binary.
Plans and prices
RMUX
MIT or Apache-2.0 dual license · self-hosted local software
Read 9 Oct 2026 · rmux.io
On the record
- Automation
- SDK automation includes typed session, window, and pane handles, structured snapshots, keyboard and mouse input, waits, and pane events.rmux.io · read 9 Oct 2026
- Encryption
- Web Share derives per-connection keys using X25519, ML-KEM-768, and HKDF-SHA256, then encrypts terminal frames with ChaCha20-Poly1305.rmux.io · read 9 Oct 2026
- Installation
- Install options include package managers, prebuilt installers, and Cargo; the docs say quick installers verify SHA256.rmux.io · read 9 Oct 2026
- Integrations
- The project documents a ratatui integration widget and a Claude Code teammate mode that runs Claude inside a local RMUX workspace.github.com · read 9 Oct 2026
- License
- RMUX is dual-licensed under MIT or Apache License 2.0.github.com · read 9 Oct 2026
- Licensing
- The maker's homepage says RMUX is dual-licensed under Apache-2.0 and MIT.rmux.io · read 9 Oct 2026
- Limit
- The Python and TypeScript SDKs require the RMUX binary to be installed first.rmux.io · read 9 Oct 2026
- Network exposure
- Default control uses local IPC, and browser sharing or remote access requires explicitly starting Web Share and, for remote access, a tunnel or ingress.rmux.io · read 9 Oct 2026
- Package availability
- The docs say RMUX 0.10.0 was awaiting Chocolatey review while version 0.9.1 remained available there.rmux.io · read 9 Oct 2026
- Purpose
- RMUX is a local terminal multiplexer for persistent, scriptable terminal sessions and terminal automation.rmux.io · read 9 Oct 2026
- SDKs
- Official SDKs are available for Rust, Python, and TypeScript.rmux.io · read 9 Oct 2026
- Security
- During Web Share, shells and PTYs stay on the local daemon while the browser decrypts encrypted terminal updates locally; tunnels carry encrypted frames.rmux.io · read 9 Oct 2026
- Security boundary
- The maker says tunnels see handshake metadata and encrypted frames but cannot read keystrokes, PINs, raw tokens, or terminal cells.rmux.io · read 9 Oct 2026
- Self-hosting
- The Web Share frontend is open source and can be built and served from a user's own domain.rmux.io · read 9 Oct 2026
- Sharing roles
- Web Share supports read-write operator and read-only spectator links, with separate pairing PINs by default.rmux.io · read 9 Oct 2026
- Terminal automation
- Its SDKs can send keys, wait for output, take structured snapshots, and subscribe to pane events.rmux.io · read 9 Oct 2026
- tmux compatibility
- RMUX 0.10.0 offers a tmux-compatible 90-command surface with persistent sessions and detach/reattach.rmux.io · read 9 Oct 2026
- Tunnels
- Built-in sharing options include private Tailscale access, public SSH tunnel presets, and user-provided ingress URLs.rmux.io · read 9 Oct 2026
