Browser-based platform with a focus on evergreen / automated webinars. Their main difference is that they make pre-recorded videos look like real life webinars, which is an important factor in customers' engagement. Also, the webinar can be hybrid by using live chat questions from your audience online, or you can use questions from previous session to make it look live.
It is a powerful webinar platform and quite a pricey one, so take a look at a plan that suits you most.