OKO might be a bit more popular than FOVE. We know about 1 link to it since March 2021 and only 1 link to FOVE. 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.
I cannot tackle every existing or existed device, sorry. You cannot find here products aimed at enterprises and professionals, like the StarVROne, the Varjo VR-3 or the XTAL. For historical reasons, let me mention on the fly the first pioneering headset implementing eye tracking and foveated rendering, the FOVE 0, by Japanese company Fove. Initially welcomed by a successful international kickstarter campaign in... Source: about 3 years ago
Another similar company I would recommend is OKO (https://oko.uk/). Source: over 2 years ago
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