Private betaPersonal knowledge

Your knowledge, finally alive.

Xentropy is the personal knowledge OS that thinks with you. Capture notes, voice memos, and ideas — it understands them, connects them in a living graph, and turns them into action. Join the waitlist to get early access.

Sign in
Capture anything — text, voice, or photo — in seconds
AI understands, tags, and connects every note automatically
Ask your second brain what you captured, and what to do next

What you get

One place to capture text, voice, and photos — with AI that summarizes, tags, and links everything, then surfaces it when it matters.

Waitlist snapshot

Tell us who you are, your role, and how you plan to use Xentropy as your second brain.