Apigee, ApiOpenStudio, Kong, Apache APISIX, Gravitee.io, KrakenD, VMware AirWatch, Relution, API Umbrella, 3Scale, MobileIron, Mashape, IBM Bluemix, DreamFactory, Tyk Cloud, Pushlink, Microsoft Enterprise Mobility, Mashery, APIbond, DigitMarket API Manager, Sentinet, Young App are some alternatives to WSO2 API Manager.