Kong Alternatives

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

freemium

Postman is the most efficient way to test, develop and document APIs.

freemium $8.0 / Monthly (Per user/month billed annually)

Intelligent and complete API platform

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

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.

Create, publish, maintain, monitor, and secure APIs at any scale

DreamFactory is an open source REST API backend for mobile, web, and IoT applications.

Django REST framework is a toolkit for building web APIs.

Collaborative design, instant API mock, generated documentation, integrated code samples, debugging and automated testing

Paw is a REST client for Mac.

API Integration Solution for Developers: 10x Faster • Less Maintenance • No Vendor-Lock-In. Use the same clean interface across multiple providers.

3scale is an API Management Platform that makes it easy to open, distribute, control, and monetize public, private or internal APIs.