If you want a platform that can handle microservices architecture but offer a single API to users, Grafbase is an interesting option. Grafbase is a unified graph platform that lets developers mash up multiple data sources into a single graph that can be deployed at the edge or on-premise. It offers modern tooling for building and deploying GraphQL APIs, federation, advanced security and integration with a variety of tools like OpenAPI, Shopify and Salesforce. That makes it a good option for developers who want to build and deploy complex apps.
Another good option is Pipedream. Pipedream lets developers build complex applications that span their stack of services with low-level code control when needed and no-code interfaces when it's convenient. It lets developers add custom logic with Node.js, Python, Go or Bash and deploy instantly without worrying about servers. With access to more than 2,100 APIs and a host of pre-built components, Pipedream makes it easier to integrate services and build fast.
If you want to turn databases into APIs, Neurelo is a cloud API platform worth a look. Neurelo supports PostgreSQL, MongoDB and MySQL, and offers immediate auto-generated REST and GraphQL data APIs, AI-powered custom query APIs and deep query observability. It offers a unified interface for building, running and scaling applications, which can dramatically increase developer productivity. Neurelo's tiered pricing includes a free plan, so it's a good option for a variety of development needs.