Open source focus

Open Source Alternatives to Full Fact

5 open source Fact Checking options similar to Full Fact, 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.

View all alternatives to Full Fact →

Polars47
Data Manipulation$21.0M
An open-source, high-performance DataFrame library for Rust and Python, designed for efficient data manipulation and analysis.
Open source · Self-hostable
Open Source Endowment45
Open SourceSan Francisco, United States$750K
A nonprofit endowment aiming to permanently solve the funding problem for open-source software maintainers.
Open source · Self-hostable
AG
Agent4Rec20
Agentic AI
Simulates 1,000 LLM-powered agents for diverse movie recommendation preferences.
Open source
Software Freedom Conservancy10
Non-profitNew York, United States
A non-profit organization providing infrastructure, legal support, and fiscal sponsorship for open-source software projects.
Open source · Self-hostable
KoBoToolbox
Data CollectionBoston, United States
Open-source platform for data collection and analysis in humanitarian and development contexts.
Open source · Self-hostable

Company	Sector	License	HQ	Funding	Score
PolarsAn open-source, high-performance DataFrame library for Rust and Python, designed for efficient data manipulation and analysis.	Data Manipulation	Open source · Self-hostable	—	$21.0M	47
Open Source EndowmentA nonprofit endowment aiming to permanently solve the funding problem for open-source software maintainers.	Open Source	Open source · Self-hostable	San Francisco, United States	$750K	45
AGAgent4RecSimulates 1,000 LLM-powered agents for diverse movie recommendation preferences.	Agentic AI	Open source	—	—	20
Software Freedom ConservancyA non-profit organization providing infrastructure, legal support, and fiscal sponsorship for open-source software projects.	Non-profit	Open source · Self-hostable	New York, United States	—	10
KoBoToolboxOpen-source platform for data collection and analysis in humanitarian and development contexts.	Data Collection	Open source · Self-hostable	Boston, United States	—	—