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10 Most Popular Open Source APIs         


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Technology has recently revolutionized our planet and our way of life. We’ve come a long way from computers to smart watches. APIs are one of them, and they assist technologies in providing smooth experiences and improving human engagement with web services. APIs are now the foundation of any web or mobile application development effort. API management systems become more flexible, innovative, and robust as a result of open-source technology. Most Popular Open Source APIs is used by software developers and web development firms to interface with open-source services and data. An Open-Source API is an integration mechanism that connects developers to an Open Source or public resource. It is made up of various open projects that developers can use to create applications.

Applications of “OPEN-SOURCE APIs”:

  • It facilitates communication across internal networks and the Internet.
  • As a result, they have served as a link between the organization and its partners, suppliers, customers, and other third-party stakeholders.

The ten most popular OPEN-SOURCE APIs for integrating Open-Source goods and services.

1. Kong Gateway (OSS):

Kong Gateway is one of the popular cloud-native and open-source API gateways that is coded in the Lua programming language.

“Lue is a lightweight and high-level scripting language that can be embeddable in apps. It supports many programming methods i.e.

  • Object-oriented
  • Data-driven programming
  • Functional programming
  • Procedural programming”

When it comes to attaining great performance and portability, the Kong Gateway API works the best. Kong Gateway makes tasks simple and quickly controls all the hassle of API management. Additionally, it supports capabilities like live monitoring, upstream, service discovery, certificates, caching, failure detection & recovery, clustering, and load balancing, logging, authentication (support for OAuth2.0), rate-limiting, transformations, and lots more.

Kong supports hybrid and multi-cloud infrastructure, making it quick, versatile, and scalable.

2. Goku API Gateway

Goku is a Go-based API gateway that supports microservices architecture. It contains a built-in GUI, CLI, and a robust plug-in system that extends its capability.

Goku API Gateway has numerous services such as data processing, dynamic routing, service orchestration, load balancing, multi-tenancy management, rich traffic management, protocol conversions, identity verification, service discovery, API access control, and many more.

Goku API Gateway provides cluster deployment and dynamic service registration functionalities such as backend load balancing, API health check, and API disconnect-reconnect. It receives configuration updates on a constant basis without disrupting node processing.

Goku API Gateway has the following advantages:

  • Minimal consumption and maintenance costs
  • High scalability
  • 50% quicker than Nginx and Kong
  • Totally open source
  • Rich features include clustering, quick updates, alerting, and logging.
  • Connect quickly and easily with third-party solutions such as

3. KrakenD

KrakenD is a high-performance open-source API gateway that makes it simple to implement micro services. It functions as an aggregator for the Create API, combining several micro services into a single endpoint.

KrakenD, an open source API, focuses on challenging operations such as decoding, transformation, aggregating, and authentication. Building an endpoint is a declarative method that does not involve the use of a programming language.

KrakenD API collects all API requests from clients and determines the appropriate services to give a combined and seamless experience to customers. Caching, monitoring, user quotas, rate restriction, transformation, aggregation, filtering, and decoding are among its functions. It has a variety of proxies and securities features.

The proxy feature:

Load balancing protocol translation authentication

Security policies for SSL

Kraken Designer can be used to configure the API gateway’s behavior. It’s a graphical user interface that allows you to visually build an API or continue with an existing one. KrakenD’ expandable architecture allows you to do more functions without modifying the source code.

4. API Umbrella

 API Umbrella is an open-source API management tool built on Ruby that allows you to manage APIs and micro services. It makes life easy for API creators as well as API consumers.

It standardizes APIs and makes them scalable for API authors.

It makes it simple for API users to access all APIs with the same key and provides uniform documentation.

One of the best features of this open source API is the ability to run several businesses under one roof. It enables multi-tenancy and has an Admin who can handle all aspects of API Umbrella, such as user administration, API routing settings, viewing analytics, and more. API Umbrella provides REST API access to all administrative features.

The API umbrella’s primary features are real-time analytics, rate limitation, caching, rate restriction, and API keys.


APIman is a Java-based open-source API management tool that may be used independently or integrated with current frameworks and platforms.

What’s more, this is the only API that allows you to add extra access and control functions to an API service. This API can be used in a variety of ways, including filtering IP addresses, adding authentication, managing user access, limiting requests, and analyzing usage stats.

It has numerous features such as,

Control Your API

Asynchronous Rich Management Layer

Simple to Integrate

6. GitLab API

GitLab is a platform for developers to collaborate on coding projects. The GitLab GraphQL API is now available. Several of the procedures that we perform frequently when using the user interface are also feasible with the GitLab API.

With the API, we can automate the procedure and eliminate all user interaction. With the GitLab REST API, developers may post and retrieve issues, administer projects, and retrieve and manage users.


The WSO2 API Micro gateway is a compact, memory-efficient stateless container that allows the composition of several micro services using a single API. It also allows for runtime service discovery. It translates legacy API forms (both requests and answers) to the most recent ones, making them available to the most recent consumer apps.

The WSO2 API Micro gateway makes it easier to create, deploy, and secure APIs for micro service architecture. It has other advantages such as:

  • It can function independently and is not dependent on any other components.
  • It is highly scalable.
  • Assist developers in collaborating on API creation and testing.
  • It also connects Docker and Kubernetes easily.
  • It supports mutual TLS, OAuth2.0, API keys, and role-based authentication and authorization.
  • Rate limitation, service discovery, load balancing, request and response transformation, and circuit breaker are some of its important characteristics.

Gravitee.io is a Java-based open source API management tool that helps enterprises secure, publish, analyze, and document their APIs. It’s highly flexible and lightweight, and it offers remarkable features like:

  • IP filtration
  • Rate control
  • Options for plug-and-play
  • Load distribution
  • Resource sharing among people of different origins

8. Gravitee.io:

The Gravitee API platform’s three primary modules are API management, access management, and the alert engine.

API management (APIM) is a free and open-source solution that offers you comprehensive control over your APIs. It is simple yet effective, customizable, lightweight, and extremely quick.

Access Management (AM) is an open-source identity and access management solution that allows users to create their own authentication and permission flows. It allows you to track logins, sign-ups, and other action metrics. The access management console is versatile, lightweight, and easy to use. It gives you the ability to develop a centralized and robust single sign-on feature for all customers.

The Alert Engine (AE) is a module that allows users to quickly and easily configure alerts and get messages in order to detect and avoid suspicious attempts.

9. Fusio

 Among developers, this is the most Most Popular Open Source APIs administration tool. It is a PHP-based API platform that assists developers in the creation and management of REST APIs with diverse data kinds. It enables the construction of API endpoints for requesting and transforming database data. Using this API management platform, you can quickly construct API and customize their responses. With the Fusio API platform, you may create API endpoints without any coding skills.

It acts as a link between your internal API and your micro services. You can also charge your users for API calls.

It contains useful features such as a dashboard for controlling administrators, extensive documentation, JSON validation for incoming requests, rate-limiting, authorization, RPC support, analytics, and user permission management.


The greatest cloud-native API management tool for developers is Tyk. Tyk is a robust API gateway management tool created in the Go programming language that is open source. It runs on Redis as data storage and can handle 50,000 queries per day. Tyk facilitates the connection of RESTful APIs, which is why it is also known as “the thing that connects the thing to the other thing.”

It swiftly integrates systems and services and generates safe and scalable business APIs. Tyk allows you to analyze, manage, and display all of your information from a single dashboard. It is available in both free and paid editions.

It includes incredible features like rate-limiting, version control, authentication methods, notifications and events, monitoring, and analytics.


IT is embracing open-source technology. Most web and mobile app developers offer open-source services. Open-source technologies will grow. Why wait? Test these demanding open-source API gateways to find the best for your business. Next, hire a web and mobile app Development Company to assist you integrate these open-source APIs. These Most Popular Open Source APIs management platforms should benefit your software development efforts.For more informative data follow website:https://techdeposits.com/


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