1. KrakenD is a pure open source API Gateway that interacts with all your different microservices providing clients a single interface. Improves response times, saves bandwidth, delivers a better user experience and saves developers time.

  2. Gravitee.io is a flexible, lightweight and an open source API management solution.

    freemium

  3. Intelligent and complete API platform

  4. Tyk is an open-source API gateway and API management platform.

  5. An open-source management layer for APIs and microservices.

  6. Microsoft Azure API Management enables user to create consistent and modern API gateways for existing back-end services hosted anywhere, secure and protect them from abuse and overuse, and get insights into usage and health.

  7. IBM API Connect is a comprehensive management solution that addresses all four aspects of the API lifecycle: create, run, manage and secure.

  8. WSO2 API Manager is a 100% open source enterprise-class solution that supports API publishing, lifecycle management, application development, access control, rate limiting and analytics in one cleanly integrated system.