Open Source APIs# Open Source API
## About open source software
Open source, sometimes abbreviated as OS, is a type of software distribution model that releases its source code for the world to see.
OS projects power some of the largest names in web-based software, including WordPress and Wikipedia.
## What is an open source API?
APIs released under an open source model are just like any other open source project. Their accessible source code can make them powerful tools in the developer's arsenal of coding shortcuts.
## How do open source APIs work?
API that are released as open source function the same way as any other type of API.
Typically, that means a developer sends a query to the API for an external service using the language their program is written in. The API will then take that query and either update data on that external service or return it to the program where the query originated.
## Who is an open source API for?
Because there are so many APIs that use open source distribution models, and they have so many different feature sets, this type of API is for every developer who enjoys free access.
## Why are open source APIs important?
There are many benefits of open source APIs for developers.
First and foremost, the source code for the API is accessible to anyone. That means if there is a question developers have about an API integration in their program, they can simply look at the source code to find out what isn't working and why because of the developer community backing the open source API.
Because open source projects are usually community-driven, developers can also develop an API's functionality with the help of everyone in the community for their projects.
Additionally, these APIs are often free of charge, reducing costs even more than an API developed using proprietary software.
## What can you expect from open source APIs for developers?
Open source projects depend in part on their communities.
If an API has an inactive community, it is likely not being updated. Contrarily, busy communities suggest the API will be usable for years to come.
## Are there examples of the best free open source APIs?
APIs that are distributed under an open source license are almost always free. However, some may have premium features such as support available at an additional cost.
1. [Kaiko](https://rapidapi.com/Kaiko/api/kaiko-digital-assets-reference-data)
2. [Elyez](https://rapidapi.com/lontongcorp/api/elyez-free-open-source-gps-tracking)
3. [Deckbrew](https://rapidapi.com/kyleconroy/api/deckbrew)
4. [Quantum](https://rapidapi.com/triplecheck/api/quantum)
5. [Ghost API](https://rapidapi.com/dimas/api/Ghost)
6. [Text Tone Sentiment](https://rapidapi.com/mikerlynn/api/text-tone-sentiment)
7. [LibrariesIO](https://rapidapi.com/zakutynsky/api/LibrariesIo)
## Open Source API SDKs
All open source APIs are supported and made available in [multiple developer programming languages and SDKs](https://docs.rapidapi.com/v2.0/docs/getting-started-with-rapidapi-sdks) including:
1. Node.js
2. PHP
3. Python
4. Ruby
5. Objective-C
6. Java (Android)
7. C# (.NET)
8. cURL
Just select your preference from any API endpoints page.
[Sign up today for free on RapidAPI](https://rapidapi.com/signup) to begin using Open Source APIs!
Free and Open source GPS Tracking Platform. This is the API Platform to provide easy integration and no need IP public servers to run your own platform. Open source hosted on gitlab, https://gitlab.com/elyez, customize as your needs. Free your soul and business from vendor locked system now.
Open source and fully functional Blackjack game. It is built on a REST based application programming interface (API). We have taken care of all the back-end complexities so you can concentrate on creating your own games.
Register to get your API credentials to start playing or download a developers build of the game. Read the documentation at http://docs.betgidy.com/blackjack-api/
The DeckBrew Magic: The Gathering API is open source. Please report any issues or bugs you encounter. This API wouldn't have been possible without the amazing mtgjson and mtgimage resources.
The Kaiko reference API is an open source solution that maps all assets and instruments on all exchanges, accessible through the Market API. More info: https://docs.kaiko.com/#reference-data-api
RESTFull API to get data from MrLooquer service. MrLooquer combines open source intelligence techniques with heuristic and
data mining to perform one of the first attempts to create a real map about
IPv6 deployment and its relationship with current networks and protocols.