Documents and notes decision
Notion
A small team can reproduce a useful subset (docs, blocks, search, sharing) in weeks, but replicating Notion’s AI features, integrations, cross-platform polish, and large-scale reliability is impractical for a DIY build.
Visit website↗Open-source builds that already do this
Every project below is open source and already does this job today. Fork one, self-host it, or take the parts you need — the build prompt further down assumes an empty file, and this is the shortcut past that. Licences differ; check the one on each card before you ship.
What a replacement has to do
- Create and edit rich 'pages' composed of content blocks, store them in a searchable database, share/collaborate with workspace members, and publish pages to the web.
What it still won’t have
- Notion AI features and Agents (AI meeting notes, agents, research mode)
- Deep integrations and connectors to many third-party apps (enterprise connectors)
- Polished cross-platform native apps and large-scale reliability at millions of users
- Enterprise security, SSO/SCIM, audit logs, and advanced admin controls
What remains hard
- Brand trust
Over 100M users worldwide
- Brand trust
Trusted by 98% of the Forbes Cloud 100
First-year cost
Keep paying
Paying is—cheaper in year one.
On cash alone, building overtakes the subscription at 1 seat.
Money you would actually spend
Time you would spend
—
What you would spend
What we assumed
The verdict above measures whether you could build it. This one is only about money.
Runnable build prompt
Build a minimal Notion-like docs-and-databases app using React (or Next.js) frontend, Postgres backend, and S3 for file storage. Implement: 1) a block-based rich text editor supporting paragraphs, headings, lists, images and embeds; 2) backend schemas for pages, blocks, and workspace membership; 3) full-text search with Postgres tsvector and a simple search UI; 4) user registration, workspace creation, and per-page sharing links; 5) publish-to-web static rendering. Out of scope: real-time collaborative cursors, native mobile apps, AI agents, and enterprise SSO. Include error handling, server-side validation, database migrations, basic automated tests for API endpoints and editor save/load, and deployment scripts (Docker + Terraform for a single cloud region).
How we checked
How the score was reached
- Partly verdict base52
- An open-source build was found+5
- 5 cited sources+3
- Price verified on pricing page+3
- 3/3 assessment runs agreed+4
- Evidence score67
The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time — so the same evidence always produces the same number.
How scoring works →Cited sources · 5
Every page the run actually retrieved.
- official productNotion
- official pricingNotion Pricing
- official docsNotion Docs
- open sourceAppFlowy-IO/AppFlowy
- open sourceTriliumNext/Trilium
Integrity checks
What held up, and what did not.
