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NapkinBook

A computational whiteboard that closes the gap between data and decisions. Cloud-first and collaborative.

Visit NapkinBookdesk.napkinbook.com
Free planremote
NapkinBook screenshot, image 1

Overview

A computational whiteboard that closes the gap between data and decisions. Cloud-first, collaborative, and built for durable work.

AI summary

NapkinBook is a cloud-first computational whiteboard designed for data-driven decision-making. It allows users to input evidence and beliefs, with real-time recalculations as inputs change. The platform emphasizes live collaboration and end-to-end encryption, enabling users to share boards without account creation.

Sources behind this listingSee source links, recorded dates and owner corrections.

Observed facts come from public pages. Founder-edited facts are supplied by the verified owner. AI-inferred facts are model interpretations; derived facts are calculated from other data. A source link lets you check the current page. It does not guarantee the fact is still current.

Dates show when a record was saved. Some older records use the listing’s update date; they are not proof of a fresh check. Missing source records are shown explicitly.

TaglineA computational whiteboard that closes the gap between data and decisions. Cloud-first and collaborative.
ObservedRecorded Source: desk.napkinbook.com
DescriptionA computational whiteboard that closes the gap between data and decisions. Cloud-first, collaborative, and built for durable work.
ObservedRecorded Source: desk.napkinbook.com
Free planYes
ObservedRecorded Source: desk.napkinbook.com
Free trialNot stated
Source not recordedDate not recordedSource link unavailable
Company locationremote
ObservedRecorded Source: desk.napkinbook.com
SummaryNapkinBook is a cloud-first computational whiteboard designed for data-driven decision-making. It allows users to input evidence and beliefs, with real-time recalculations as in...
AI-inferredRecorded Source link unavailable

Who Is It For

Best for

Teams and individuals looking for a collaborative platform to visualize and compute data-driven decisions in real-time.

Not for

Users seeking advanced integrations or extensive social features, as these are not currently supported.

Strengths & Weaknesses

Biggest strength

The ability to recompute values live as inputs change, fostering dynamic collaboration and decision-making.

Biggest weakness

Limited visibility into pricing and integration options, which may hinder some potential users from fully evaluating the tool (AI-inferred; may be outdated. Founders can correct this)

Classification

Likely competitors
MiroMicrosoft WhiteboardLucidspark

Alternatives to NapkinBook

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Community

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How we sourced this: Observed fields () were crawled from https://desk.napkinbook.com/ when recorded. Source links and dates are available above. AI-inferred fields () were generated by gpt-4o-mini and are always labelled, never presented as measured fact. Last updated: 9 September 2026. Site availability checked: 6 September 2026. Is this your tool? Claim it to edit and get a do-follow badge.