Sentient OS is a new open-source AI app from a Y Combinator Fall 2026 startup that turns your Mac into a computer that actually remembers you. Connect the sources you choose — mail, calendar, notes, messages, files — and overnight, a local AI model reads through them and writes what it learned into plain Markdown files. Everything runs on-device, so it's free and private.
It ships with two headline features: Sidekick, a computer-use agent that picks up tasks with its own on-screen cursor, and Double Tap, which drafts replies in your voice using your personal context. The app is free, and entering the code FINAL_1000 keeps it free for life.
Read the full breakdown here: https://rohantechofficial.com/ai-tools/sentient-os-ai-learns-your-life-overnight/
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