An application programming interface(APIs) is a connection between computers or between computer programs. It is a type of software interface, offering a service to other pieces of software. A document or standard that describes how to build such a connection or interface is called an API specification.
There are a lot of opensource APIs available over internet. Here I’m going to tell you about some of them.
Open Weather Map API
Open weather map API provides the current weather information for any location including over 200K cities. This API is one of the very useful API for the programming beginners who want to know about what are and how to use REST APIs in their any projects.

Marvel Comics API
Marvel comic APIs is the world’s greatest comics API. This API helps the developers to create extraordinary websites and applications using their API data from the 70+ years of the Marvel age of comics

Chuck Norris Joke API
One of the best free and popular APIs to boost your API integration skills. This API is really made from the inspiration of famous actor Chuck Norris. This action star practically has his second career inspiring memes and jokes over the internet.

Cat Facts API
Cat Facts API is the freely available API to use in your upcoming projects without any cost which any amount of request.

Frankfurter API
Frankfurter API is one of the best APIs to use in your new project. You can easily grab all the API usage concepts by heading upon its well-written documentation the you’re good to go.

Free-To-Play Games API
Free-To-Play Games has a collection of various categorized games which provides the free API to get those lists of games by their defined API links. Free-To-Game API is available for everyone to use without any restrictions.

TMDb API
The Movie Database (TMDb) is a huge database of various movies and shows which is made by the community. Data of each movie here is added by the amazing community of the TMDb since 2008. Almost in every programming tutorial, the usage of TMDb API is really popular.

Covid-19 API
One of the best COVID-19 data providers. To date, 504M+ amount of requests is served by this API. This provides the latest COVID-19 related data which gets updated multiple times a day.

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