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Open API
Developing websites and apps these days means understanding how to use APIs. They send data from your customer to your site and then back again. APIs are the key to making websites and apps do what they are supposed to do. They transmit the data to and from the website or app to the user.
But you don’t need to build them from scratch. Instead, you can use Open API software to create the API you want. This will save your time and money. Someone else has already done the work for you!

What Is Open API?

Open API simply refers to API code that has already been written and is available for the public to use. Developers of all sorts created them and put them on the web so people can put it directly into their code. It carries no licenses or restrictions. It is totally free for people to use when developing their sites or apps.

What Are Open API Specifications?

The Open API specifications – formerly known as the Swagger Specifications – are a set of rules that define the API itself. The specifications let users describe, produce, consume and visualize RESTful APIs. In layman’s terms, the specifications tell you what to expect and how to use the API.

Open API List

Searching for open APIs can be a challenge. Luckily, there are sites that have curated general open APIs, and you can search them. On these lists, all of the open APIs meet current specifications and can be used.
Probably the best list to start with is provided by Git Hub. API List is another great resource.

What Is Swagger API Used For?

Swagger is the term for the tools used to implement open APIs. In other words they allow you to view, edit and put open APIs into your programming code. Most Swagger tools are free for the public to use. Some of them may cost a minor fee.

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