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So is Appflowy
Collaborative workspace (Linux only)
★ 66K Knowledge base Note-taking Collaboration License: AGPL-3.0AppFlowy is the AI workspace where you achieve more without losing control of your data
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So is Affine
Collaborative workspace for your knowledge base
★ 56K Knowledge base Note-taking Collaboration Whiteboard License: MITThis is the Community Edition of Affine.
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So is NocoDB
Open-source Airtable alternative
★ 58.2K Database Data Spreadsheet License: AGPL-3.0NocoDB is the fastest and easiest way to build databases online.
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So is Open Notebook
An open-source, privacy-focused alternative to Google's Notebook LM with AI-powered research and note-taking
★ 5.3K AI Note-taking Knowledge base Research Learning RAG License: MITAn open-source, privacy-focused alternative to Google's Notebook LM with full control over your research and learning workflows.
Open Notebook empowers you to take control of your learning and research process with AI assistance while maintaining complete privacy.
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So is Docmost
Collaborative wiki and documentation software
★ 17.5K Wiki Knowledge base Collaboration License: AGPL-3.0Open-source collaborative wiki and documentation software.
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So is Colanode (server)
Collaboration workspace
★ 3.9K Knowledge base Note-taking Collaboration Messaging License: Apache-2.0Colanode is an all-in-one platform for easy collaboration, built to prioritize your data privacy and control. Designed with a local-first approach, it helps teams communicate, organize, and manage projects—whether online or offline. With Colanode, you get the flexibility of modern collaboration tools, plus the peace of mind that comes from owning your data.
Sure, Notion is awesome.
But have you considered these open source alternatives?
They are free, self-hostable and community-driven.
Check by yourself: Appflowy , Affine , NocoDB , Open Notebook , Docmost , Colanode (server) .