Sillage

Sillage is a self-hosted web interface for developers who want to control Claude Code, Codex and OpenCode from a computer or phone. It runs the native agent CLIs on your machine with their own tools and permission flows. Agents use your existing subscriptions and API credentials; hosting the interface doesn't replace their model providers.

Conversations survive a closed browser while the host stays awake and Sillage keeps running. You can resume on another device, queue instructions during a turn or steer work already underway. A file editor, diffs, Git history and terminals sit beside the conversation. Worktrees keep branch work separate, and full-text search covers conversations across projects.

Project boards let agents read task cards, consult earlier decisions and leave notes. Sessions can message each other or launch another agent at your request. Shared project instructions and memory carry conventions between the supported coding tools. Scheduled prompts can run unattended.

Sillage is open source under MIT. It runs on Linux, Apple Silicon macOS and Windows through WSL2, with Docker and Kubernetes deployment options. Its server keeps session history on your host. It's designed for trusted users: accounts share the host's subscriptions and API keys, agents run under the same system account, and users have no system-level isolation.