Open source focus

Open Source Alternatives to Notion

7 open source SaaS options similar to Notion, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Every company listed publishes its source: each one carries an open source sector tag and a public GitHub repository.

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PromptQL45
Artificial IntelligenceSan Francisco, United States
An AI-native workspace designed to turn team interactions into actionable, proprietary data for agentic workflows.
Open source · Self-hostable
OpenProject14
Project ManagementBerlin, Germany
Open-source project management software.
Open source · Self-hostable
Posit67
Data Science PlatformBoston, United States$169.9M
Open-source data science platform for enterprise teams, enabling collaboration and reproducible results.
Open source · Self-hostable
Nextcloud52
Cloud ComputingNuremberg, Germany$63.0M
Open-source, self-hosted file sync and share and collaboration platform.
Open source · Self-hostable
Omnivore23
Consumer App
A free and open-source read-it-later service with AI-powered features and integrations.
Open source · Self-hostable
ERPNext20
Enterprise SoftwareBangalore, India
Open-source ERP system for small and medium-sized businesses.
Open source · Self-hostable
XWiki3
SoftwareParis, France
Open-source enterprise wiki and collaboration software.
Open source · Self-hostable

Company	Sector	License	HQ	Funding	Score
PromptQLAn AI-native workspace designed to turn team interactions into actionable, proprietary data for agentic workflows.	Artificial Intelligence	Open source · Self-hostable	San Francisco, United States	—	45
OpenProjectOpen-source project management software.	Project Management	Open source · Self-hostable	Berlin, Germany	—	14
PositOpen-source data science platform for enterprise teams, enabling collaboration and reproducible results.	Data Science Platform	Open source · Self-hostable	Boston, United States	$169.9M	67
NextcloudOpen-source, self-hosted file sync and share and collaboration platform.	Cloud Computing	Open source · Self-hostable	Nuremberg, Germany	$63.0M	52
OmnivoreA free and open-source read-it-later service with AI-powered features and integrations.	Consumer App	Open source · Self-hostable	—	—	23
ERPNextOpen-source ERP system for small and medium-sized businesses.	Enterprise Software	Open source · Self-hostable	Bangalore, India	—	20
XWikiOpen-source enterprise wiki and collaboration software.	Software	Open source · Self-hostable	Paris, France	—	3