I guess Luxul might be the most well known but there are others like Pakedge and Araknis. They are marketed more towards the AV market. Their specs show that they have a very high throughput and are made to stream HD video with audio over ethernet, music, IP cameras, and data for homes, bars, restaurants, etc. Some of them have some nice features like a mobile app to manage it, automatic alerts if it goes down and even the ability to power cycle an individual port on the switch.
Has anybody been using these successfully?