What SigmaNote is
A knowledge base that answers questions instead of only storing files. PDFs, voice notes, web pages and videos go in, and conversational agents built on that material answer questions back.
The stated principle is that the knowledge is yours and the AI works from it rather than from general training.
What you can do with it
- Store PDFs, voice notes, pages and videos
- Ask questions across all of it
- Build agents on your own material
- Retrieve knowledge by conversation
- Turn saved material into written output
- Keep a long-term memory of what you read
Who it is for
- Students and researchers
- Founders and consultants
- Lawyers and clinical staff
- Creators accumulating reference material
What to watch out for
- It depends on the quality of what you upload and does not vouch for sources
- Anything official, from customer communication to health records or business decisions, needs checking
- Check rights before saving and processing material you do not own
- Generated answers can be wrong in a way that sounds confident
Pros & cons
✓ What we like
- Several knowledge formats in one base
- Agents answer from your own material
- Good for long-term accumulation
- Clear emphasis on data ownership
! What to watch out for
- Quality depends on what you put in
- Output needs verification before official use
FAQ
How is it different from a note app?
It gathers several formats into one base and answers questions from them rather than storing notes by folder.
What can I save?
PDFs, voice notes, web pages and video material, provided you have the right to save them.
Can it write my conclusions?
No. It helps retrieve and organise; conclusions need your own checking of sources and logic.
Last reviewed: 2026-09-15
More AI office assistant tools
View all →-
10xWinners OKR OKR tracking software that keeps company goals and team execution on one page Free tools Personal assistant Enterprise tools Office Task management -
1minAI One workbench for text, image, audio and video AI tasks under a single credit balance Free tools Workflow automation Multi model platform Audio Office -
1stCollab Influencer marketplace that matches brands with creators and manages the campaign Free tools Knowledge base Q&A Office Ad creative Lead generation -
20paths Interactive product demos built for explaining a product and driving conversion Free tools Knowledge base Q&A Office PPT generator Customer service automation -
6figr Salary data, offer checks and automated applications for people planning a move Free tools Knowledge base Q&A Office Enterprise automation -
A4F AI business consultants and a digital mentor for early-stage founders Free tools Freemium tools Enterprise tools Knowledge base Q&A Office