Would be good to include [Tyk](https://Tyk.io) in there, as far as OSS gateways go it's one of the more popular ones (caveat: I'm the founder) :-)
We don’t hide the ball We invest heavily in ensuring you can do everything you need to do in OSS version We ensure that there’s always an OSS way of doing things with Tyk, we don’t strong arm you into buying
We do need to feed ourselves, so for the proprietary stuff, we need to be competitive, that’s just how the market works.