It looks like a crowded field with a big range of offerings, but also some very direct competitors. I'm curious what sets Mux apart from the others!
The "Show HN" thread from 2018 is a good read.
In general, we put a lot of work into performance, developer experience, product flexibility, and support.
Mux is definitely on our shortlist, the website and developer documentation made a great first impression. Very clear and easy to understand, the developer focus is obvious.