Sentient OS
An on-device LLM understands your entire life, then proactively offers to get your work on
Sentient OS is an on-device AI assistant for macOS that reads local files and messages, builds a personal knowledge base, and performs computer-use tasks. It runs an on-device model that summarizes and understands your data while filtering out junk and sensitive content, with processing scheduled overnight so results are ready in the morning.
Key components include Sidekick for computer use across apps and windows, morning cards prepared overnight, a knowledge base stored as plain markdown and folders, and an inference engine built on a custom LiteRT-LM fork running Gemma 4 E4B. It can connect to frontier models through ChatGPT, Claude, OpenRouter, LM Studio, or your own endpoint, and can read your knowledge base when enabled. Supported sources include Files, WhatsApp, iMessage, Email, and Apple Notes.
It is free and open source, optimized for Apple silicon, and available as a macOS download or via Homebrew. It requires Full Disk Access and runs when open in the menu bar with the Mac plugged in.
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