Best Free API Gateways of 2026 - Page 2

RouterBase serves as a comprehensive API gateway, allowing developers and teams to utilize over 200 AI models, including well-known options like GPT, Claude, Gemini, Llama, Mistral, and DeepSeek, all through one OpenAI-compatible endpoint. This eliminates the need for managing different keys and billing systems for each model, as switching between them is as simple as changing a single configuration line. Additionally, RouterBase enhances functionality with intelligent routing, built-in failover capabilities across various providers, and consolidated billing, ensuring that your application remains operational even in the event of an upstream provider failure. Moreover, a free tier is offered with no requirement for a credit card, making it accessible for users to explore the service. With RouterBase, developers can streamline their workflow and focus on building innovative applications without the hassle of juggling multiple integrations.

Fusio is an open-source platform designed for API management, enabling users to create and oversee REST APIs effectively. With Fusio, you can swiftly develop a cutting-edge API, establish a dedicated developer portal, and explore monetization options for your API. The platform features an intuitive backend that facilitates comprehensive control and management of the entire API lifecycle. Additionally, Fusio includes a developer portal application that streamlines the setup of your API program, serving as a hub for developers to register and access your API. Out of the box, Fusio offers a variety of pre-built actions for a range of tasks, such as proxying HTTP requests to an internal API or generating an API from a database table. This functionality enables you to create APIs in a Low-Code manner, minimizing the need for complex coding. Furthermore, Fusio's Worker-System supports the development of actions in multiple programming languages, currently including Java, Javascript, PHP, and Python, allowing for versatility in API development. By leveraging these features, developers can efficiently bring their API ideas to life while maintaining flexibility in their coding preferences.