Fusio is described as 'open source API management platform which helps to build and manage REST APIs. Fusio provides all tools to quickly build an API from different data sources yet it is possible to create complete customized responses' and is an app in the Development category. There are more than 10 alternatives to Fusio for a variety of platforms, including Online / Web-based, Linux, Self-Hosted solutions, Mac and Windows. The best alternative is Tyk, which is both free and Open Source. Other great apps like Fusio are WSO2 API Manager (Free, Open Source), Apigee (Freemium), Backendless (Freemium) and APIbond (Free).
APIBond is a service that acts as a proxy where you can configure an existing API. One problem with the existing APIs in the market is the lack of customization. Eg. Twitter API calls returns the same response to everyone.
Tyk Cloud is a full-featured API management platform based around the open source Tyk API gateway, that means you get all the features of the open source version without any of the integration and implementation headaches.
3scale provides an out of the box cloud API management platform and infrastructure for developers, and companies to securely open, control, manage, operate and monetize their API to third parties (e.g. developers, business partners, etc.).
Build APIs Rapidly Quickly define a new API and start building your endpoints in seconds. With our cloud offering you will immediately have a publicly available host serving up your API responses. Start by mocking your endpoints or jump right into connecting to other sources!