API Gateways analysis

F1: determines whether the product is open-source
F2: indicates if the product is able to import an API specification in OAS;
F3: determines if there exist any language to declare the API Gateway configuration, such as the values for the limitations;
F4: shows if there is a mechanism to export/import all the API Gateway configuration.
F5 and F6: show the support of limitations, quotas or rates, respectively;
F7: indicates whether the API Gateway supports other metrics apart from requests in the limitations;
F8: determines if user-defined metrics are supported.

Name	F1	F2	F3	F4	F5	F6	F7	F8
3Scale		✔			✔		✔	✔
Akana		✔		✔	✔	✔	✔
Ambassador	✔(2)		✔			✔
API Umbrella	✔					✔
Apiaxle	✔		✔		✔
Apigee Edge		✔	✔		✔	✔
AWS API Gateway		✔	✔		✔	✔
Axway Amplify		✔		✔	✔	✔
Azure API Mgmt.		✔	✔		✔	✔	✔
CA API Mgmt.		✔		✔	✔	✔	✔	✔
ExpressGateway	✔	✔(1)	✔		✔
IBM API connect		✔		✔	✔	✔
Kong	✔(2)	✔			✔	✔
Mulesoft		✔		✔	✔
Oracle API Plt.		✔			✔
Repose	✔		✔			✔
TIBCO Mashery		✔	✔		✔	✔
Tyk	✔	✔	✔		✔	✔	✔
WSO2 API Mgmt.	✔	✔		✔	✔		✔

(1) This feature is planned for an upcoming release.
(2) The base product is open-source, but the add-ons (such as the one for the advanced rate limiting) are proprietary. 