Documents and notes

Notion alternatives

2 open-source projects that already do this job. Free to use - not free to run, which is what the numbers on the right are for.

The full assessment →

The projects

AppFlowy-IO/AppFlowy75,040AGPL-3.0Open-source, Notion-like workspace offering block-based editing, pages, databases, and collaboration features.Open on GitHub TriliumNext/Trilium37,290AGPL-3.0Hierarchical note-taking web app with rich editing, server storage, search, sharing, and knowledge base features.Open on GitHub

What you give up either way

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

An open-source project doing the core job proves a replacement is possible. It does not prove it matches Notion, and it does not prove anyone has run it for a month. How we decide.