BookStack
A wiki organised as books, chapters, and pages. MIT.
Not affiliated with Notion
Free software that replaces Notion
No per-seat licence. Notion is a product of Notion. Open SaaS Alternatives is not endorsed by them.
Notion
List price not stored. We have not stored a list price. Vendor pages and roundups disagreed, or the page was not re-checked for this build. Type the figure on your invoice into the calculator.
Wiki.js
A general-purpose wiki with a visual editor. AGPL.
Docmost
A team wiki under AGPL, with Docker Compose.
Outline
A fast team wiki on the Business Source Licence.
AppFlowy
Notes and databases, with a desktop app, under AGPL.
AFFiNE
Notes and a whiteboard. Production use of the official server needs a subscription.
Coverage of the main jobs
✓ does it, ◐ partly, ✗ no, — not assessed. Editorial only.
Questions
What replaces Notion without a per-seat licence?
BookStack leads this list on measured signals (56). BookStack is a straightforward company wiki. GitHub reports MIT. The repository description says the project is now managed on Codeberg, and the GitHub homepage points there. Star figures on this page are from the GitHub repository we queried on 15 Oct 2026.
How much does Notion cost for 10 people over three years?
We have not stored a list price. Vendor pages and roundups disagreed, or the page was not re-checked for this build. Type the figure on your invoice into the calculator. The calculator on this page uses the number on your invoice, not a guessed list price.
Is Open SaaS Alternatives affiliated with Notion?
No. Notion is a product of Notion. We are not affiliated with, endorsed by, or sponsored by Notion. “Replaces Notion” describes the job, not a partnership.
Scores follow the published formula.