CaptainFact.
Collaborative Fact Checking platform
To train a critical mind, improve the quality of information and decision-making.
Against fake news, fraud and disinformation
A copylefted libre online platform, transparent and open to different perspectives. It supports active citizenship and respects your privacy.
CaptainFact alerts you when you come across false or contested information in a video.
CaptainFact is participative: sign up to help verify the information.

Against fake news, fraud and disinformation
To train a critical mind, improve the quality of information and decision-making.

Viewers
For vigilant spectators.
Automatically displays verified facts in the top-right corner of videos, so you can easily inspect sources confirming or disagreeing with the presented arguments.
Critical viewer
To check information and express your critique.
It is often difficult to have constructive fact based conversations in the comment section of YouTube videos. CaptainFact provides a platform dedicated to the sourcing and contextualisation of information, to allow fact-based discussions that improve critical thinking
By subscribing, you will be able to check your desired information with a large community of experienced or amateur fact checkers


YouTuber
For reliable YouTube channels
By using CaptainFact, channels enable their audience to check and contextualize the information presented in the videos. Advantages are numerous. The confrontation with a critical audience will not only improve your channel’s reliability but can also lead to a more constructive interaction with your audience, as videos are checkable on CaptainFact.
Debates
For debate hosts.
Improves debate quality by publishing a video recording on CaptainFact. Make your guests more careful about their speeches, as they know that their arguments as well as their rhetoric mistakes might be checked later using swarm intelligence. It will highlight the the integrity of your guests and grow the trust of your audience.
Activist
For activists of all kinds.
Makes your demands to media, politicians and people more serious. Reinforces the legitimacy and relevance of your demands thanks to fact-based arguments, coming from public, governmental or scientific sources.
How does it work?
- Video is added on the website.
- Statements are extracted from the video.
- Fact-checkers confirm or refute the statements.
All CaptainFact's extension users will see our verifications directly on YouTube video.
Discover Extension

Who are the fact-checkers?
The fact-checking is done collaboratively. Everyone can share their knowledge to fight against: inaccuracies and omissions ; distortions of information (voluntary or not) ; information put out of context ; fake news ; pseudo-sciences, rhetological fallacies, intellectual dishonesty, demagogy, untruths, or other. Sign up now to participate!
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Join fact checking forum
Help CaptainFact fight disinformation
by improving or developing the platform or by spreading the word about our work.
Backend Developers :
Come play with Elixir, a programming language that not only has a beautiful syntax but also is also functional and tolerant to mistakes. You will feel like a hipster ;)
Check the backend’s issuesFrontend Developers :
We are using React, Redux and are always looking for upgrades and new functionalities on the UX/UI side
Check the frontend’s issuesDesigners :
Work on the actual design of the platform to improve our website and develop new solutions for the future of collaborative fact checking.
Graphic designers :
Illustrate one of the biggest fights of humanity: critical minds against disinformation
Animator :
Host and take care of one of the most reliable (and brilliant) web communities.
Communications Specialists :
A lot of communication and advertising are still to carry out to promote the advantages of a critical mind; fact based debates and verified information.
You speak other languages.
Bring our fact-checking tools to a larger community by translating the website and build bridges by becoming a project ambassador.
Contact us
You can also help us with recurring financial support or donation via our crowdfunding platform.
Follow us
Latest videos
See all videosTechnical team and ambassadors
Ambassadors are special members in charge of looking after the community. They also aim to report users' expectations to the technical team and participate in the governance of the project. Learn more