Stellab

Stellab turns scattered tabs and PDFs into a research constellation. It's a research state browser, not another tab manager.

A tab isn't the unit of research. A session is. Inside it: clusters of evidence, with roles, missing context, and a clear next step.

What Stellab does
- Auto-clusters your open tabs and PDFs.
- Labels each source: core / background / unread / supporting evidence.
- Detects missing context and suggests the next action — quietly.
- Works in English, 한국어, 中文.

What Stellab isn't
- Not another tab manager.
- Not a chat-first AI tool.
- Not a note app or PDF organizer.

Data: only the tabs you explicitly add are processed. No ads, no third-party sharing. See our privacy policy for details.

50% lifetime discount for the first 100 users — beta only.