Sanctum

Sanctum lets users download and run open‑source large language models directly on their desktop computers, eliminating the need for an internet connection after installation. The application supports macOS 12+ on Apple Silicon and Intel, as well as Windows 10+, with Linux planned for the future. It provides a simple setup process that loads full‑featured LLMs in seconds, enabling conversational AI, PDF summarization, code assistance, data analysis, and other productivity tasks entirely on‑device.

All processing and storage occur locally, with on‑device encryption ensuring that user data never leaves the machine. This privacy‑first approach gives users complete control over their information while still accessing a wide range of models through built‑in Hugging Face integration, which can check compatibility and download GGUF model files.

The software is positioned for individuals who require a private, offline AI assistant for tasks such as brainstorming, content creation, personal health tracking, financial analysis, and collaborative coding, without relying on cloud services. It is released as a stable product for macOS and Windows.