A second brain that cites itself.

Capture what you read, watch, or hear. XESO turns it into a source-anchored note in seconds, then lets you chat across your full brain or one segment with citations on every claim.

Start free

No credit card. 100 notes and 200 chat messages a month on the free plan.

What XESO does

Capture in under 10 seconds

Paste a link, drop a file, or share from your phone. XESO turns YouTube, web pages, PDFs, audio, and email into structured notes fast.

Every note is source-anchored

Summary, key takeaways, and a citation-ready passage set. Deep-link back to the exact timestamp, paragraph, or page.

Chat across your brain, a segment, or a single note

Scope each question to exactly what matters. Every answer cites the passage it came from.

It compounds as you use it

Segments become memory boundaries, saved answers become notes, and entities connect across sources. Your knowledge stays portable and keeps compounding.

Why people stay

Grounded

Refuses to answer without a passage match. Every number traceable.

Private by default

Your notes never train a model. Vault and temporary-chat modes ship on day one.

Portable

One-click Markdown export, round-trip safe. You can leave. Most people don't.

Built for teams that need answers they can verify.

Start capturing