List of the Top 25 Free API Management Software in 2025

Designed for optimal performance and effective resource management, KrakenD is capable of handling an impressive 70,000 requests per second with just a single instance. Its stateless architecture promotes effortless scalability, eliminating the challenges associated with database maintenance or node synchronization. When it comes to features, KrakenD excels as a versatile solution. It supports a variety of protocols and API specifications, providing detailed access control, data transformation, and caching options. An exceptional aspect of its functionality is the Backend For Frontend pattern, which harmonizes multiple API requests into a unified response, thereby enhancing the client experience. On the security side, KrakenD adheres to OWASP standards and is agnostic to data types, facilitating compliance with various regulations. Its user-friendly nature is bolstered by a declarative configuration and seamless integration with third-party tools. Furthermore, with its community-driven open-source edition and clear pricing structure, KrakenD stands out as the preferred API Gateway for enterprises that prioritize both performance and scalability without compromise, making it a vital asset in today's digital landscape.

People Data Labs specializes in delivering B2B data solutions tailored for developers, engineers, and data scientists. The company offers an extensive dataset that includes resume, contact, demographic, and social details for over 1.5 billion distinct individuals. This data can be utilized for product development, profile enhancement, and facilitating AI-driven predictive modeling. Developers access this information through APIs, ensuring seamless integration into their projects. PDL partners exclusively with legitimate businesses that strive to positively impact the community through their products. The data provided by PDL is essential for organizations establishing data departments, particularly those prioritizing data acquisition. Such companies depend on high-quality, rich, and compliant individual data to safeguard their operations and maintain integrity in their processes. In an era where data-driven decision-making is key, PDL's offerings empower businesses to harness valuable insights effectively.

In just a matter of days, you can encapsulate any data source with a unified Data API, facilitating easier access to reporting and analytics information for your teams. This approach streamlines data retrieval for application developers and data engineers, allowing them to obtain information from various sources effortlessly. - A single, schema-less Data API endpoint - Manage metrics and dimensions through an intuitive UI - Visualize data models to accelerate decision-making - Schedule management for data export via API Our proxy seamlessly integrates into your existing API management framework, whether it's Mulesoft, Apigee, Tyk, or a custom-built solution, ensuring compatibility with your versioning, data access, and discovery needs. By harnessing the power of the Data API, you can enhance your offerings with self-service analytics capabilities, which allows for dashboards, data exports, or a custom report composer for on-the-fly metric inquiries. With ready-to-use Report Builder and JavaScript components designed for popular charting libraries like Highcharts, BizCharts, and Chart.js, embedding data-driven features into your products becomes straightforward. Your users will appreciate the ability to make informed, data-driven choices, eliminating the need for you to handle custom report queries. Ultimately, this transformation not only elevates user experience but also significantly increases the efficiency of your operations.

Linx is a robust integration platform as a service (iPaaS) designed to facilitate the connection of various data sources, systems, and applications within organizations. Renowned for its flexibility akin to programming, the platform excels in managing intricate integrations on a large scale. As a result, it has become a favored option for expanding businesses that aim to adopt a cohesive integration strategy, streamlining their processes and enhancing operational efficiency. Additionally, Linx empowers users by providing the tools necessary to customize their integrations to meet specific business needs.

The Qorus Integration Engine® stands out as the sole transaction-sure automation platform designed for enterprises, enabling seamless connectivity between in-house, cloud, and operational technologies. By merging straightforward configuration of business processes with resilient orchestration and robust error recovery, Qore empowers organizations to swiftly launch new services amidst an era of rapid innovation and evolving industry landscapes. Renowned global companies rely on Qore to transform their business processes and accelerate their innovation efforts. Qorus incorporates features such as AI-driven automation, resilient workflows, seamless integration of native Python and Java languages, and a data provider API that autonomously analyzes and interacts with any system, regardless of the underlying API or integration technology. Additionally, Qorus is offered in both a paid enterprise version and a complimentary, fully functional community edition, ensuring accessibility for various business needs. This versatility makes Qorus an appealing choice for enterprises looking to enhance their operational efficiency while fostering innovation.

Postman is a collaborative platform tailored for API development, aimed at streamlining the process of creating APIs while promoting teamwork, which leads to the quick production of high-quality APIs. Its various features support every stage of API development, thereby enhancing collaboration and expediting the process of building superior APIs. Users have the ability to rapidly and easily send requests for REST, SOAP, and GraphQL APIs right within Postman, which optimizes their workflow significantly. Moreover, it offers the capability to automate manual testing, integrating these tests into your CI/CD pipeline to prevent potential issues when new code is deployed. The platform also enables effective communication regarding API behavior by allowing users to simulate endpoints and their responses without needing a backend server. Additionally, you can create and publish visually appealing, machine-readable documentation, making your API more user-friendly and accessible. Regular monitoring of performance and response times keeps you updated on the health of your API, allowing for proactive management. Furthermore, Postman encourages a shared environment for both the creation and consumption of APIs, fostering real-time collaboration among team members, which can lead to more innovative solutions. This combination of features not only enhances productivity but also helps teams work more cohesively towards developing robust APIs. Postman’s AI Agent Builder is a comprehensive tool that accelerates the creation, testing, and deployment of AI agents by providing easy integration with APIs and LLMs. It allows users to quickly turn APIs into agent-ready tools, test LLMs’ performance and costs, and compare responses to choose the best model. The no-code platform features a visual canvas that lets developers design and configure agent workflows with ease.

Boss Insights offers an unparalleled gateway to the financial data of business clients through a single interface that integrates various services, including accounting, banking, commerce, payroll, and taxation (such as Quickbooks, Stripe, and SalesForce). This innovative solution is utilized by fintech companies and neobanks to achieve remarkable improvements, including a 60% boost in automation, fully automated scoring, a 51% acceleration in funding processes, and a fivefold increase in the speed of renewals. The efficiency gained through this integration not only streamlines operations but also enhances decision-making capabilities for financial institutions.

A single platform offers endless opportunities to engage with both your customers and staff. Any application can be made secure with authentication capabilities. Okta enables you to swiftly develop experiences that are both secure and enjoyable. By integrating Okta's Customer ID products, you can assemble the necessary framework to ensure security, scalability, and dependability. Safeguard and empower your employees, contractors, and partners effectively. Okta’s workforce identification solutions ensure that your employees remain protected regardless of their location. You will be equipped with essential tools to streamline cloud transitions and facilitate hybrid work environments. Trusted by organizations worldwide, Okta is committed to safeguarding workforce identities while promoting seamless connectivity across various platforms. This reliability and trust make Okta a go-to choice for businesses aiming to enhance their security infrastructure.

Unleash is an open-source feature management platform designed specifically for large organizations. It prioritizes privacy, security, and scalability, making it ideal for handling the most intricate configurations right from the start. Seamless Integration Unleash allows for effortless integration with a variety of programming languages, demonstrating its technology-stack agnosticism and commitment to transparency as an open-source solution. Highly Scalable You can create numerous environments, each operating on distinct instances, regardless of their geographical locations. Robust Functionality Customize Unleash to fit your unique requirements effortlessly, leveraging a clean and powerful user interface that is designed with an API-first approach. Data Security Your user information is protected through principles of privacy by design, ensuring data residency, private instances, and a range of flexible hosting options that cater to your needs. Additionally, Unleash’s architecture allows for future expansions and enhancements, ensuring it can grow alongside your organization.

APILayer serves as a comprehensive marketplace for both third-party and proprietary APIs, providing developers and businesses of any scale with easy access to a variety of options. This platform simplifies the process of obtaining secure and scalable APIs. By featuring only the most dependable APIs on specific subjects, APILayer ensures quality and reliability. Users can try out the APIs by downloading demos directly from the marketplace. With a commitment to maintaining a 99.9% uptime and offering subscription-based support, APILayer stands as a valuable resource for enhancing the capabilities of your applications, making it an essential tool for developers.

Tyk is a prominent Open Source API Gateway and Management Platform, recognized for its leadership in the realm of Open Source solutions. It encompasses a range of components, including an API gateway, an analytics portal, a dashboard, and a dedicated developer portal. With support for protocols such as REST, GraphQL, TCP, and gRPC, Tyk empowers numerous forward-thinking organizations, processing billions of transactions seamlessly. Additionally, Tyk offers flexible deployment options, allowing users to choose between self-managed on-premises installations, hybrid setups, or a fully SaaS solution to best meet their needs. This versatility makes Tyk an appealing choice for diverse operational environments.

We revolutionize API management for all users, whether they're part of startups or large enterprises. Within mere minutes, you can incorporate authentication, analytics, and developer documentation seamlessly. Zuplo empowers you to safeguard your API efficiently by implementing rate-limiting in no time. Additionally, you can enhance your APIs with over 50 plugins, including authentication options, all with a single click. Built on edge technology, Zuplo operates across more than 300 data centers globally, ensuring that multi-cloud deployments are a superior experience. The platform enables you to execute various workloads across different cloud environments while upholding a consistent set of API policies. Uniquely, Zuplo serves as the only gateway that directly supports OpenAPI, allowing you to leverage the OpenAPI ecosystem for your API and deploy it directly to the platform. Furthermore, Zuplo automatically generates visually appealing documentation for your API, which you can personalize using markdown, and allows developers to conveniently obtain their API Keys directly from the documentation. This streamlined process not only improves efficiency but also enhances the overall developer experience.

Effortlessly manage APIs across both cloud-based and on-premises environments: In addition to utilizing Azure, establish API gateways that work in tandem with APIs deployed across various cloud services and local infrastructures to optimize API traffic flow. It is crucial to uphold security and compliance standards while ensuring a unified management experience and full visibility over all APIs, both internal and external. Speed up your operations through integrated API management: Modern businesses are increasingly adopting API frameworks to drive their growth. Streamline your workflows in hybrid and multi-cloud environments by using a centralized platform to oversee all your APIs effectively. Protect your resources diligently: Exercise the option to selectively grant access to data and services for employees, partners, and clients by implementing measures for authentication, authorization, and usage limitations. This approach not only helps maintain tight control over access but also fosters collaboration and efficient interactions, thereby enhancing overall operational effectiveness. Ultimately, a robust API management strategy can be a key driver of innovation and efficiency within an organization.

Xano provides a comprehensive, managed infrastructure designed to support your backend needs with scalability. It allows you to rapidly establish the necessary business logic without needing to write any code, or alternatively, you can utilize our pre-designed templates for a swift launch that maintains both security and scalability. Creating custom API endpoints only requires a single line of code, streamlining the development process. With our ready-made CRUD functions, Marketplace extensions, and templates, you can significantly reduce your time to market. Your API comes prepped for immediate use, enabling you to connect it to any frontend while you focus on refining your business logic. Additionally, Swagger automatically generates documentation for seamless frontend integration. Xano incorporates PostgreSQL, offering the advantages of a relational database along with the capabilities required for big data, akin to a NoSQL solution. Enhancing your backend is straightforward, as you can implement new features with just a few clicks, or leverage existing templates and extensions to expedite your project. This flexibility ensures that developers can adapt quickly to changing requirements while maximizing efficiency.

Ambassador Edge Stack serves as a Kubernetes-native API Gateway that delivers ease of use, robust security, and the capability to scale for extensive Kubernetes environments globally. It simplifies the process of securing microservices by offering a comprehensive suite of security features, which encompass automatic TLS, authentication, and rate limiting, along with optional WAF integration. Additionally, it facilitates fine-grained access control, allowing for precise management of user permissions. This API Gateway functions as an ingress controller based on Kubernetes, and it accommodates an extensive array of protocols, such as gRPC, gRPC Web, and TLS termination, while also providing traffic management controls that help maintain resource availability and optimize performance. Overall, Ambassador Edge Stack is designed to meet the complex needs of modern cloud-native applications.

MSG91 is a cloud-based communication platform that enables businesses and developers to effortlessly integrate various communication methods into their applications and services through APIs, including SMS, Email, Voice, RCS, WhatsApp, and more, along with off-the-shelf solutions such as a cloud contact center and customer segmentation tools. This versatility allows companies to enhance their customer engagement strategies effectively.

Apidog provides an all-encompassing array of tools aimed at optimizing the complete API lifecycle, allowing research and development teams to implement best practices centered around API design. Featuring a powerful visual editor, the platform enables users to efficiently design and troubleshoot their APIs. It improves user experience with support for JSON Schema, which makes describing and debugging APIs more straightforward. Apidog automates key components of the API lifecycle, such as generating tests from API specifications, performing visual assertions, validating responses, and integrating seamlessly with continuous integration and continuous deployment (CI/CD) processes. Moreover, it supports the creation of visually appealing API documentation that can be either shared securely among teams or published on a custom domain. With its local and cloud-based mock engine, Apidog generates realistic mock data that corresponds to field names and specifications, eliminating the necessity for writing scripts. The suite of high-quality tools allows your team to collaborate effectively while reducing repetitive tasks. You can easily describe your API during testing and generate JSON or XML schemas with a single click. Additionally, creating test cases from APIs, adding assertions visually, and developing complex test scenarios that include branches and iterations becomes a straightforward task. By utilizing Apidog, teams can significantly boost their productivity and enhance collaboration throughout the entire development lifecycle, leading to more innovative solutions and improved project outcomes.

A single platform enables the construction, integration, and exposure of your digital services as managed APIs across cloud, on-premises, and hybrid environments, thereby facilitating your digital transformation strategy. You can seamlessly integrate with your current identity access and key management solutions to enforce industry-standard authorization protocols, including OAuth Connect, OpenID Connect, or JWTs. This platform allows for the creation of APIs utilizing existing services, offers management capabilities for APIs sourced from both third-party providers and internally developed applications, and provides insights into their usage, performance metrics, and decommissioning processes. Furthermore, to enhance support for developers, elevate your services, and encourage broader adoption, you can deliver real-time statistics on API usage and performance, enabling informed decision-making among stakeholders. Such comprehensive functionality makes it an invaluable tool for organizations aiming to stay competitive in a rapidly evolving digital landscape.

Apiway.ai is a free integration platform that empowers users to find the right B2B software and seamlessly connect it with various cloud applications in a matter of five minutes, all without any coding experience required. You can easily link multiple cloud applications at no cost while having the chance to earn up to 50% in recurring commissions. This opportunity is genuine; by participating in our affiliate program, you can earn some of the industry's most competitive commissions simply by promoting Apiway and bringing in new users. After registering for our affiliate program, you will be provided with a unique affiliate link to share, and you’ll enjoy 50% recurring commissions on every sale generated through your link, which includes renewals, upgrades, and one-time purchases for as long as your referrals maintain their subscriptions. Boost your growth potential with automated customer experience solutions that can enhance your outreach. If you are currently spending on Facebook ads but have yet to explore email marketing, consider using Mailerlite to convert leads back into your sales funnel and increase your conversion rates. When integrating with Telegram, it's important to note that all data will be sent through the Telegram bot, which is vital for preserving the integrity of your information flow. Additionally, utilizing these tools can significantly streamline your processes, leading to greater efficiency in managing your online presence and ultimately enhancing your business operations. By harnessing the power of these integrations, you can create a more cohesive and impactful digital strategy.

With the cutting-edge IBM API Connect, organizations can efficiently secure and oversee every element of their API ecosystem across various cloud infrastructures. This platform enhances both socialization and monetization initiatives, enabling businesses to thrive in the digital landscape. IBM API Connect®, recognized for its comprehensive, user-friendly, and scalable nature, empowers users to develop, securely share, and administer APIs across diverse cloud environments. By doing so, it enables businesses and their clients to drive innovation and develop digital applications effectively. Additionally, IBM API Connect can integrate with other tools as part of an IBM Cloud Pak®, aiding organizations in achieving their application modernization objectives during their cloud transition. Security within IBM API Connect is fortified by the sophisticated IBM® DataPower® Gateway, which features a single, signed, and encrypted gateway, significantly mitigating the risk of cybersecurity threats. With a remarkable 22% market share, it surpasses all competitors, establishing itself as a reliable API solution that safeguards services and data throughout various cloud settings. This comprehensive approach not only enhances security but also empowers companies to innovate and adapt to the rapidly evolving technological landscape.

DronaHQ is an innovative low-code/no-code platform that empowers organizations to design, launch, and oversee tailored applications efficiently and on a large scale. Its standout features comprise: - Highly customizable user interface components - Accelerated app development by tenfold - Effortless integration with any pre-existing technology stack - A robust, scalable cloud-based architecture - Access to over 50 hours of engineering support (Unique Value Proposition) By utilizing DronaHQ, companies can save valuable developer time, safeguard their lifetime value, and minimize customer churn, making it an essential tool for enterprises. This platform is favored by developers and engineering teams for crafting various applications such as administrative panels, CRUD applications, graphical user interfaces for databases or APIs, forms, dashboards, and operational software solutions. Additionally, its user-friendly nature enables quicker onboarding for new team members, enhancing overall productivity.

Directus serves as an Open Data Platform, enabling the management of content across various SQL databases. It boasts a robust API for developers while providing an easy-to-navigate application for users without technical expertise. Built entirely in JavaScript, mainly utilizing Node.js and Vue.js, Directus is both modular and adaptable, allowing for customization to fit unique project requirements. This versatility enables the platform to function effectively as a headless CMS, a database client that promotes information accessibility, or even a standalone web application designed for managing back-office tasks such as CRM, inventory tracking, business intelligence, and project management, thus enhancing overall operational efficiency. With its wide range of applications, Directus empowers organizations to streamline their processes and optimize their digital experiences.

Backendless serves as a Visual App Development Platform (VADP) that merges API capabilities, user, and database management features with an easy-to-navigate web interface. This platform enables users to dispatch push notifications and emails, while also accommodating geolocation services and real-time chat functionalities. Additionally, applications developed on Backendless can be tailored through manually written code or by utilizing the Codeless logic creator, providing flexibility in development. Users have the option to deploy their applications on Backendless's cloud servers or opt for installation on private servers. With the Backendless UI Creator, you can build comprehensive web and mobile applications, and the UI Builder enhances this process even further. The platform's compatibility with any client-side environment ensures that data is automatically formatted correctly for various frontend operating systems. Furthermore, Backendless databases can interface with other databases, enabling users to maintain their existing data sources while effectively managing them through Backendless's user-friendly interface. This functionality not only streamlines development but also enhances the overall user experience.

Effortlessly connect your product to hotel information in mere minutes by securely accessing and updating various hotel systems through a comprehensive and well-documented JSON API. The ability to link your application to our Test Hotel almost immediately allows you to begin integrating with actual hotels in a matter of days instead of weeks. By utilizing a single, user-friendly universal REST API, Impala interfaces with a multitude of hotel systems, guaranteeing a streamlined connection for your needs. Our platform is built with bank-level security, fully compliant with GDPR regulations, and is hosted in multiple geographic locations to ensure greater reliability. Impala is positioned to be the premier integration solution for property management systems, freeing you from the hassle of managing numerous connections. As we consistently broaden our network of hotel systems, your business can tap into a more diverse selection of hotels every month. Understanding the significance of comprehensive data in contemporary hotel technology, Impala provides seamless two-way data exchange, enabling you to access guest details, process new transactions, or receive updates on rate changes effortlessly. With Impala, you can rest easy knowing that all your hotel data requirements are met with efficiency and security, allowing you to focus more on growing your business. This ensures that you stay ahead in a competitive market by leveraging the latest in technology and data management.

SyncTree aims to serve as a comprehensive "Super Connecting Platform" designed to seamlessly link any desired services. By incorporating SyncTree STUDIO, a tool that enables users to construct backend business logic through block coding, alongside Block Store, which functions as a marketplace for trading pre-designed backend function blocks similar to an App Store, users can effectively harness data and interconnect services, paving the way for boundless service growth. This innovative approach allows for enhanced flexibility and creativity in service integration.