There is Consumer Reports in the US: http://cr.org They are a nonprofit that has been independent for decades and have strict policies against accepting gifts, sponsorships, ads, etc, and take other steps to remain free from influence. For example, when they review new cars they send an undercover individual to buy it at normal price from a random dealer so the company and the dealer don't know the buyer is CR (and maybe sweeten the deal or throw in upgrades or take steps to improve its reliability or whatever). They also review a lot of household and kitchen appliances, mattresses, etc.
The New York Times now has their "Wirecutter" reviews of tech and household stuff, but they do rely on affiliate links for income so take that as you will.
There is not a single independent consumer organization that can test every product out there, so if you're looking at road bikes you may end up with a different set of trusted reviewers than if you're looking at computer hard drives or roof shingles.
CR also tends to limit itself to middle-of-the-range items. If you're actually interested in the best, their surveys don't always cover it, since they prefer to review things that most people can/would purchase. This has changed a bit in the last few years, but it's still the case that if you want to find solid unbiased reviews of, for example, high end ranges or washing machines, CR is not always the most helpful.
My dad was a big CR subscriber. After a while I realized that they focus on what might be termed "best value", although that's still not quite right. Their picks always emphasized mundane things like TCO, reliability, durability. For cars they were very explicit about this, each year issuing data on vehicles with categories like reliable, held their value, and low-maintenance, etc.
The prefect example of a CR-friendly car, in my mind, is the Toyota Camry. Completely unremarkable.
Everything else I remember them reviewing – watches, TVs, stereos, calculators, cameras – always ended up recommending some middle-of-the road "it works but it's not fancy and doesn't have many bells-and-whistles" product. I have a vague memory of them putting a Minolta camera at the top of the list of best 35mm SLRs in the 70s.
In Germany, there is the Stiftung Warentest, which has in depth tests of many household appliances and goods. According to Wikipedia, they cooperate with Which? in the UK and Consumers Union in the US.
(For example, when they recently tested shaving blades, they had 23 testers shave their face half with one, half with a different shaver, randomised, then had each (half of each) shave assessed by the tester himself and an external expert blind (ie the tester did not know which shaver was used, or how the tester had judged the shave). Assessed where: quality of the shave; comfort; burning, reddening and irritations of the skin; cuts; how many shaves until the blades were blunt; ease of use & switching blades; cleaning of the blades; presence of polycyclic aromatic hydrocarbon and other chemicals in the handle; and more.)
Part of the point of my other comment in this thread [0] is that we shouldn't need to drown out link farms. Google chooses to not hide link farms. Does anyone seriously think that a company (Alphabet) that is capable of sucking in known protein structures and then spitting out predicted structures for thousands of other proteins is not also capable of identifying link farm pages? Yes, it's a non-trivial problem, but chess, go and protein folding are non-trivial problems too. Google appears to have chosen not to treat this as a problem worthy of its capabilities.
