I've been reviewing the market recently for open source API Gateways. I'm looking to sit my gateway in-front of a number of API services provided by node.js express applications.

I'm looking for basic rate limiting, throttling and some form of API monitoring. Upon a quick Google search I've come across the following products but I'm completely clueless as to whether the community feels any one is better than the other or if anyone has any real world experience with these products and can offer some insights into good / bad points.

https://tyk.io
https://moesif.com
https://gravitee.io/
https://apiumbrella.io/
https://getkong.org/