Open Source APIs

List of some free open source web APIs available on the RapidAPI marketplace.

Related APIs

Open Source APIs

Best Open Source APIs for Testing

What is an open source API?

An open API (often referred to as a public API) is a publicly available application programming interface that provides developers with programmatic access to a proprietary software application or web service. APIs are sets of requirements that govern how one application can communicate and interact with another. - Wikipedia

Where can you find open source APIs?

Here are a few places you can find open source APIs:

How to Get Started

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OAuth2 Authentication
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OAuth2 Authentication