NewsGuard might be a bit more popular than Metafact. We know about 1 link to it since March 2021 and only 1 link to Metafact. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Just please ask someone with specific knowledge of these things before you embark on them. Check Wikipedia, it is very peer reviewed when it comes to science based information. Try out metafact as well. Remember just because something has someone with letters before their name (Dr) or qualifications under their belt, still check out the person, a vaguely connected qualification from 40 years ago doesn't hold a lot... Source: almost 3 years ago
And AP used newsguardtech.com which I linked and it is a paid service used mostly by professional journalists to keep track of disinformation daily from the USA and around the world. But they do have a free emailed news letter which I highly recommend. Source: almost 2 years ago
Fact Check by Google - Google fights fake news in search with 'fact check'
The Factual - Hottest news topics, most credible stories
Partial Press - Breaking news according to political bias 🗞
Ground News Pro - Platform to compare news sources covering the same issue
SureOrNot - Automatically detect whether a shared article is outdated
AllSides - Don't be fooled by bias. Think for yourself.