In the UK we have https://fullfact.org https://fullfact.org , an independent fact checking charity. It isn't quite the same thing, e.g. is more of a service tha

In the UK we have https://fullfact.org https://fullfact.org , an independent fact checking charity. It isn't quite the same thing, e.g. is more of a service than software, but is open source friendly, e.g. was the topic of a recent Lucene hackathon.