If you're looking for something to replace API Governance, Kong is a good alternative. Kong is an API gateway and service mesh that can help you manage APIs more easily, with real-time visibility and security. It spans multiple clouds and supports multiple protocols, and it's got built-in tools to quickly create and test APIs. That makes it a good choice for companies that want to make API management more efficient and get developers working faster.
Another interesting option is ReAPI, which uses AI and ChatGPT to help you design, test and document APIs. It's got a visual API designer, a no-code test case designer and documentation tools. That can speed up API development and help ensure high-quality APIs through collaboration and versioning controls.
If you're looking for a broader software development toolset, SmartBear has a collection of products designed to improve API development, testing and monitoring. Its API Hub includes tools like SwaggerHub and PactFlow for designing, documenting and testing APIs. It's flexible, integrating with widely used development tools and frameworks, so it's good for small and large projects.
These alternatives offer a lot of features to help you govern APIs and speed up development, similar to API Governance. They can help automate reviews, enforce best practices and ensure consistency in how you manage APIs.