Jan

It provides a desktop client for macOS that lets users run open‑source language models locally or connect to hosted services such as GPT, Claude, Gemini, Llama, and others. The interface is minimalist and supports dark mode, allowing users to ask questions, get brief answers, and keep context across a conversation.

The application is positioned for people who want personal AI assistance without reliance on a single cloud provider, including developers, designers, and anyone who prefers an offline or self‑hosted workflow. It offers a plug‑in system for selecting different model back‑ends and plans to add persistent memory for longer‑term context.

Jan is distributed under an open‑source license, has accumulated millions of downloads, and is actively maintained on GitHub with a public roadmap and community channels. It targets users who value transparency, customizability, and the ability to run AI locally on their Mac.