termbridge 0.1.9

Browser-based terminal session workspace built on ttyd and tmux

TermBridge

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TermBridge is a local browser workspace for managing tmux-backed terminal sessions through ttyd.

It is built for developers who keep many local shells, agent CLIs, and project workspaces open at the same time. TermBridge lets you create reusable shortcuts, launch them inside a workspace directory, attach to the terminal from a browser, and return to running work through tmux instead of hunting through terminal windows.

[!IMPORTANT] TermBridge does not yet include user authentication, authorization, HTTPS, multi-user isolation, or hosted deployment hardening. Managed ttyd sessions bind to 127.0.0.1 and use local Basic Authentication by default, but this is local hardening rather than a deployment security boundary. If you access TermBridge through a public network, mobile client, tunnel, or reverse proxy, add appropriate access control, TLS, and isolation outside TermBridge. Do not expose an unprotected instance.

Why TermBridge?

• Manage local terminal workspaces from a browser UI
• Keep terminal state through tmux across refreshes and reconnects
• Attach browser terminals through ttyd
• Launch reusable shortcuts such as bash, claude, codex, or custom commands
• Use readiness-based runtime providers for Windows/Cygwin, Windows/WSL, and Linux
• Store state locally in JSON files; no database server required

Architecture

TermBridge groups sessions by runtime environment and workspace path. Internally, each workspace maps to a tmux session, and each session entry maps to a managed tmux window.

Supported environments

Runtime host	Status	Notes
Windows/Cygwin	Supported when ready	Uses Windows-native ttyd, Cygwin bash, and Cygwin tmux.
Windows/WSL	Supported when ready	Uses Windows-native ttyd and enters the default WSL environment with wsl.
Linux	Not ready yet	Linux host support is still being prepared.

All runtime hosts start as not_ready. Use the environment page to check dependencies or save required paths. If no runtime is ready, TermBridge guides you to environment setup instead of showing an unusable create flow.

Requirements

Development:

• Python 3.11+
• uv
• Node.js and Yarn
• just

Runtime:

• ttyd
• tmux
• Cygwin, WSL, or a Linux shell environment

Quick start from source

Install dependencies:

just install

Start both development servers:

just dev

To run them separately, start the fastapi API:

just dev-backend

Then start the web dev server in another terminal:

just dev-frontend

The fastapi runs on 127.0.0.1:9008 by default. The web runs on 127.0.0.1:9007 and proxies /api and /health to the fastapi.

Open the web in your browser, go to the environment page, and run the checks for the runtime provider you want to use.

Installed usage

After installing the Python package, run the server with:

termbridge --host 127.0.0.1 --port 9008

Configuration

TermBridge reads settings from environment variables with the TERMBRIDGE_ prefix and from .env.

See .env.sample for the available settings and a local development example.

Shortcuts

Shortcuts are reusable command entrypoints. Documented examples use plain commands such as bash, claude, and codex.

Review and edit shortcut commands before use. A shortcut command is executed on your local machine inside the selected runtime provider, so treat shortcut configuration as trusted local code execution.

Docker

Build and run locally:

docker build -t termbridge:local .
docker run --rm -p 9008:9008 termbridge:local

The container serves the built web from the fastapi. Runtime tools such as ttyd, tmux, Cygwin, WSL, or Linux shell environments still need to be available and correctly configured for terminal sessions to work.

Do not publish this container on an untrusted network without adding authentication, HTTPS, and isolation appropriate for your deployment.

Development

For checks, packaging commands, pull request guidance, and repository hygiene, see CONTRIBUTING.md.

Security

See SECURITY.md for the current security boundary and vulnerability reporting guidance.

License

TermBridge is released under the MIT License.