Bunker is a macOS app for people who want capable AI without the privacy trade-offs of cloud-based tools. It runs local language models directly on your Mac, so your conversations, files, and project context never leave your machine. You can chat across multiple projects, give the model persistent memory that stays on-device, and run agentic coding workflows without an API key or internet connection. It's built for developers and technical users who need a practical, offline-capable AI environment — not a browser tab that phones home on every keystroke. The local-first approach also means no usage caps, no subscription throttling, and full control over which model you run.