Top 10 Public APIs on GitHub for Seamless Integration

Jennie Lee
8 min readMar 30, 2024

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Introduction to Free APIs for Software and Web Development

In the world of software and web development, integrating application programming interfaces (APIs) has become a common practice. APIs allow developers to tap into external resources and services, enhancing their applications with additional functionalities. While some APIs require a paid subscription, there are also many free APIs available for developers to use in their projects. These free APIs not only offer cost-effective solutions but also provide a great opportunity for developers to experiment and learn.

One valuable resource for finding free APIs is the GitHub repository called “Public APIs.” This repository is a collective list of various APIs that are free to use for both software and web development purposes. It features APIs from different categories such as Animals, Anime, Anti-Malware, Art & Design, Authentication & Authorization, and many more. The Public APIs repository is continuously updated by the community, ensuring a wide range of options for developers to choose from.

While the Public APIs repository is an excellent resource, there are also alternative websites that provide free API resources. Some popular sites include Free APIs, Dev Resources, Public APIs Site, Apihouse, and Collective APIs. These sites offer additional collections of free APIs that developers can explore and utilize in their projects.

As a sponsor of the Public APIs project, APILayer provides developers with a platform to explore, discover, and consume public APIs. APILayer simplifies the integration process, making it easier for developers to incorporate APIs into their products. With APILayer, developers can find the best-fit APIs for their projects and seamlessly integrate them, without the hassle of managing multiple API connections.

Now, let’s dive into the “Public APIs” GitHub repository and explore the different categories of free APIs available.

Exploring the “Public APIs” GitHub Repository

The “Public APIs” repository on GitHub is a treasure trove of free APIs for software and web development. It houses a vast collection of APIs spanning across various categories, making it a valuable resource for developers. The repository is a collaborative effort, and its contents are continuously updated by the community. This ensures that developers have access to the latest and most relevant APIs for their projects.

The “Public APIs” repository features APIs in categories such as Animals, Anime, Anti-Malware, Art & Design, Authentication & Authorization, Blockchain, Books, Business, Calendar, Cloud Storage & File Sharing, Continuous Integration, Cryptocurrency, Currency Exchange, and many more. Each category contains multiple APIs, allowing developers to choose the ones that best match their needs.

As of the latest update, the “Public APIs” repository showcases over 1,000 APIs across various categories. This extensive collection ensures that developers have a wide array of options to choose from, catering to a diverse range of software and web development projects.

To explore the “Public APIs” repository and discover the different categories and APIs available, you can visit the GitHub repository. Take your time to browse through the categories and explore the APIs that catch your interest. The repository provides a comprehensive README file that details the usage instructions and documentation for each API.

Now, let’s take a closer look at some of the categories available in the “Public APIs” repository and their potential use cases for developers.

Categories of Free APIs available on GitHub

A. Animals

The Animals category in the “Public APIs” repository offers a variety of APIs related to animal data. These APIs provide developers with access to information, images, and sounds related to different animal species. With these APIs, developers can integrate animal-related features into their applications, such as displaying random animal facts, retrieving images of specific animals, or generating animal sounds.

A few popular APIs in the Animals category include:

  • Cataas: This API allows you to dynamically generate images of cats based on different parameters such as type, size, and format. It’s a fun API that can be used to incorporate cat images into your application.
  • Dog CEO’s Dog API: If you prefer dogs over cats, this API is the perfect choice. It provides access to a vast collection of dog images, allowing you to fetch random dog images or search for images of specific dog breeds.

These animal-related APIs can be utilized in a wide range of projects, including educational apps, pet-related websites, or even in fun mobile applications where users can browse and explore different animal species.

B. Anime

If you’re an anime enthusiast or building an application related to anime, the Anime category within the “Public APIs” repository has got you covered. This category features APIs that provide access to anime data, including information about different anime series, characters, episodes, and more. With these APIs, developers can create anime-related applications, such as anime search engines, episode trackers, or character information apps.

An example of an anime-related API in the repository is:

  • Jikan API: This API is a flexible and comprehensive source of anime-related data, providing features like searching for anime, retrieving information about anime characters, and fetching details about episodes. It allows developers to easily integrate anime data into their applications.

These anime-related APIs open up a world of possibilities for developers who want to create applications that cater to anime fans or showcase anime-related content.

C. Anti-Malware

In the realm of software development, security is of utmost importance. The Anti-Malware category within the “Public APIs” repository offers APIs that help enhance the security of your applications. These APIs allow developers to perform malware scans, identify malicious URLs, and check the reputation of specific files or domains. By integrating anti-malware APIs into your applications, you can add an extra layer of protection and safeguard your users’ data.

One notable API in the Anti-Malware category is:

  • VirusTotal API: This API allows you to scan files or URLs for known viruses and malware. It provides detailed reports about the scan results, ensuring that your application stays protected against potential threats.

By incorporating anti-malware APIs, developers can significantly enhance the security of their applications, protect user data, and prevent potential security breaches.

D. Art & Design

For developers working on projects related to art and design, the Art & Design category in the “Public APIs” repository offers a variety of APIs to explore. These APIs provide access to art-related data, including images, colors, and artistic information. By integrating these APIs into your applications, you can enrich them with art-related features such as retrieving random artwork, generating color palettes, or providing art recommendations.

Some notable APIs within the Art & Design category include:

  • Harvard Art Museums API: This API gives you access to the extensive collection of artworks from the Harvard Art Museums. You can search for artworks, retrieve detailed information about specific pieces, or even browse through collections based on different criteria.
  • ColourLovers API: With this API, you can retrieve a wide range of color palettes, patterns, and gradients. It provides you with endless possibilities for incorporating beautiful color schemes into your applications.

By utilizing art and design APIs, developers can add a creative touch to their projects, whether it’s creating art discovery platforms, designing apps with aesthetically pleasing color schemes, or building art-focused educational applications.

E. Authentication & Authorization

User security is a critical aspect of web development, and the Authentication & Authorization category within the “Public APIs” repository offers APIs that can help ensure secure user authentication and authorization. These APIs provide developers with authentication and authorization services, allowing them to authenticate users, manage access control, and secure their applications against unauthorized access.

An example of an API in the Authentication & Authorization category is:

  • Auth0 API: Auth0 is a powerful authentication and authorization platform. Its API allows developers to seamlessly integrate user authentication and authorization functionalities into their applications. With Auth0, you can support a variety of authentication methods, including social login, multi-factor authentication, and more.

By incorporating authentication and authorization APIs, developers can ensure that their applications maintain the highest level of security and protect user data from potential threats.

F. Additional Categories

In addition to the categories mentioned above, the “Public APIs” repository offers even more categories to explore. Some of these categories include Blockchain, Books, Business, Calendar, Cloud Storage & File Sharing, Continuous Integration, Cryptocurrency, Currency Exchange, and many more.

Each category provides a unique set of APIs that serve specific purposes. For example, the Blockchain category offers APIs to interact with blockchain networks, the Books category provides access to book-related data, and the Business category includes APIs that offer business-related functionalities.

The possibilities are endless when it comes to utilizing these APIs. Developers can integrate them into their projects to create personalized applications, enhance existing functionalities, or even build entirely new applications based on specific categories and their respective APIs.

Alternative Sites for Finding Free APIs

While the “Public APIs” GitHub repository is an extensive and valuable resource, there are also alternative sites where you can find more free APIs for your projects. These sites offer additional collections of free APIs and provide developers with even more options to choose from.

Some popular alternative sites for finding free APIs include:

  • Free APIs: This website offers a wide variety of free APIs across different categories. It provides a user-friendly interface for browsing and searching for APIs based on specific criteria.
  • Dev Resources: Dev Resources is a curated list of developer resources, including free APIs. It gathers APIs from various sources and categorizes them for easy exploration.
  • Public APIs Site: This website is dedicated to showcasing public APIs from different categories. It allows developers to discover and explore a vast collection of free APIs.
  • Apihouse: Apihouse provides a platform for developers to discover and access APIs across various categories. It offers a centralized hub for finding and integrating free APIs into projects.
  • Collective APIs: Collective APIs is a community-driven platform that aggregates and shares free APIs. It allows developers to submit and discover APIs in a collaborative environment.

These alternative sites offer additional options for developers who are looking for specific types of APIs or who want to explore beyond what is available in the “Public APIs” repository. By utilizing these sites, developers can extend their range of possibilities and find the perfect APIs for their projects.

In conclusion, the “Public APIs” GitHub repository, along with alternative API discovery sites, provides developers with a wealth of free APIs for seamless integration into their software and web development projects. Whether you’re looking for animal-related data, anime information, anti-malware functionalities, art and design elements, secure authentication and authorization, or a myriad of other possibilities, these APIs have got you covered. Explore the categories, dive into the documentation, and embark on an exciting journey of integrating free APIs to enhance your projects with innovative functionalities and enrich the user experience.

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