OpenSourceHub
2 open-source alternatives found

Best Open-Source Alternatives
to Notion in 2026

Stop paying for Notion. These free, open-source tools give you full data ownership, no vendor lock-in, and deploy for as little as $5/month on your own VPS.

Top pick
siyuan
46.9k ⭐ · AGPL-3.0
View

Open Source vs Notion: Full Comparison

Feature Open SourceNotion
Free to use (forever)
Self-hosted / private data
Open source (auditable code)
No vendor lock-in
Docker / 1-click deploy
Unlimited users / events
Custom domain & branding
Managed updates & backups
Built-in CDN & scaling
Enterprise SLA & support

Deploy siyuan in Minutes

Follow these steps to get your self-hosted instance up and running.

  1. 1
    git clone https://github.com/siyuan-note/siyuan

    Clone the repository

  2. 2
    npm install && cp .env.example .env

    Install dependencies and configure env

  3. 3
    npm run build && npm start

    Build and launch the application

  4. 4
    Configure reverse proxy (nginx/Caddy)

    Point your domain at the app

All Open-Source Alternatives to Notion

Sorted by GitHub stars — the most popular community-backed options first.

siyuan

Notes & Docs
46.9k

An open-source, privacy-first, self-hosted knowledge workspace where humans and AI agents work together 开源、隐私优先、自托管的知识工作空间，让人与智能体在此协作

Alt to NotionTypeScriptAGPL-3.0
Oct 2026
GitHub

colanode

Database
5.2k

Open-source and local-first Slack and Notion alternative that puts you in control of your data

Alt to NotionTypeScriptApache-2.0
Oct 2026
GitHub