List of the Top Free API Management Software in 2025 - Page 3

Transform your API experience by leveraging our comprehensive, enterprise-level One APIMarketplace, designed to streamline consumption, promote collaboration, and enhance the overall developer experience. This innovative platform addresses challenges associated with API sprawl and reduces complexities by operationalizing APIs, making them easily discoverable, consumable, and accessible for teamwork. By facilitating a quicker time to market, One APIMarketplace significantly enhances API adoption through improved accessibility, detailed performance metrics, and heightened consumption rates. Empower developers with comprehensive documentation, community engagement, essential resources, SDKs, and sandbox environments to accelerate the adoption process even further. One APIMarketplace not only simplifies the process of discovering and using APIs but also ensures a smooth experience for both developers and enterprises alike. With thorough documentation and the option to test APIs in a sandbox environment before full integration, users can advance their projects with confidence. Moreover, our powerful analytics dashboard delivers crucial insights into API utilization, performance metrics, and user engagement, enabling strategic decision-making. This holistic approach ensures that your API initiatives are not only efficient but positioned for success in a dynamic digital landscape.

Testfully provides a wide range of features, including a powerful API client and advanced testing and monitoring tools. Users benefit from flexible storage options, both in the cloud and offline, which facilitate smooth collaboration among teams and enable easy migration, all through a single, comprehensive multi-platform solution. The platform enhances the process of moving data from Postman or Insomnia for effortless integration into Testfully. With an emphasis on adaptability and security, it allows users to define global, environment, and folder variables that can be customized for specific workspaces or individual accounts. Furthermore, users have the ability to tailor authentication methods, parameters, headers, and body content easily, making it simple to craft any HTTP request. Team collaboration is seamless as members can be invited, assigned distinct roles, and folder permissions can be effectively managed. Testfully accommodates major authorization protocols like OAuth2, providing secure access management capabilities. This makes it suitable for users tackling both simple tasks and complex scenarios, as the tool simplifies the testing process without necessitating any programming knowledge, making sophisticated API testing more accessible and user-friendly. Users also have the option to execute requests in a folder simultaneously, sequentially, or in random order with just one click, which significantly boosts efficiency. In addition, it supports response validation and contract testing using a declarative format, further reducing the need for coding and enhancing the overall testing experience. Ultimately, Testfully is crafted to serve both beginners and seasoned professionals, ensuring that all users can effectively harness its powerful features. Moreover, its intuitive interface allows for a quick learning curve, making it easier for newcomers to get started.

Our company is transforming the landscape of API Integration by providing a subscription service that grants users access to a myriad of APIs. With a single API key, developers can tap into an extensive selection of APIs, streamlining their workflow. This approach removes the hassle of managing multiple subscriptions and navigating complex configurations. By offering such a groundbreaking solution, we not only simplify the development process but also expedite project delivery and lower expenses. As a result, teams can focus more on innovation rather than getting bogged down by technical challenges.

A groundbreaking no-code platform that utilizes AI for developers allows for the effortless connection of various data streams, making the development of multiple app integrations a simple task. By employing an intelligent agent, users can create APIs merely through straightforward human prompts, thus enabling new integrations without the necessity of traditional coding methods. The platform provides a Universal API designed to meet all application needs, equipping users to build, expand, reuse, and consolidate their integration and authentication efforts. In a matter of minutes, users can develop high-performance, enterprise-ready APIs that feature built-in observability and compliance attributes. The capability to integrate applications in just a few clicks ensures that instant data orchestration is possible across all connected systems. This functionality allows teams to focus on scaling their operations rather than grappling with the complexities of their infrastructure, as they can effectively manage, monitor, and analyze their systems. Issues like inadequate performance, lack of insights, and scalability challenges can lead to notable inefficiencies and prolonged downtimes. Furthermore, the accumulation of API integration backlogs and complicated connectors often stifles innovation and hampers productivity. Addressing the issue of reconciling data discrepancies across different systems can consume countless hours of resources. Fortunately, users can create and integrate connectors with any data source, regardless of its age or format, streamlining and optimizing the entire process. As a result, this platform not only accelerates integration speed but also significantly improves overall operational efficiency, thus enabling businesses to respond swiftly to market demands. Ultimately, the enhanced capabilities fostered by this innovative solution create a more agile environment for developers and teams alike.

Discover exceptional API documentation that is admired by teams and users alike. At last, you have the opportunity to craft API documentation that your whole team can take pride in. Within seconds, you can launch visually striking API reference documents and make customizations in just a few minutes. Developers will be instantly pleased with crucial features, including three-panel layouts, an interactive try-it console, automatically generated code snippets, SEO enhancements, and a user-friendly search function. It's common knowledge that outdated documentation and scope creep may lead to dissatisfaction. Keep your API documentation current by seamlessly integrating your preferred source control with our cloud-based workflows. Our platform accommodates a diverse array of choices, from on-premise solutions to various API management systems. You can establish a comprehensive developer portal in minutes, utilizing your API definitions as valuable resources. Amplify the user experience with tutorials, quick-start guides, and developer tools, all while enjoying extensive customization capabilities. Ensure your API definitions undergo validation, linting, and seamless bundling, enabling the creation of consistently on-spec OpenAPI documents. Connect your API reference and meticulously adjust every detail to captivate your API consumers, ultimately nurturing a more engaging and productive environment for developers. With these features, your documentation will not only fulfill its intended purpose but also evolve into a crucial asset for fostering long-term collaboration and innovation. Embrace these tools to elevate your API documentation to new heights of excellence.

Sparrow offers a robust suite of tools aimed at optimizing the entire API lifecycle, assisting research and development teams in achieving superior outcomes in design-first API creation. Users can leverage cURL to effortlessly send API requests while utilizing vital methods like GET and POST. The platform enhances API interactions by effectively handling headers, data, and authentication processes. As an open-source collaborative platform for API development, Sparrow facilitates the efficient creation of exceptional APIs. With teamwork at the forefront, developers can enhance their methodologies early in the development timeline, leading to stronger APIs and quicker delivery times. Additionally, users benefit from smooth parallel testing across multiple environments, enabling them to collect crucial insights in real-time. Sparrow also provides powerful tools for securing and managing API data, along with self-hosting options that allow full control over testing environments. Moreover, developers can stay updated with the latest enhancements, insights, and resources offered by Sparrow, enriching their overall development experience. This dedication to ongoing improvement guarantees that developers have access to the most effective practices and cutting-edge innovations in the realm of API development, fostering a culture of continuous learning and adaptation.

APIPark functions as a robust, open-source gateway and developer portal for APIs, aimed at optimizing the management, integration, and deployment of AI services for both developers and businesses alike. Serving as a centralized platform, APIPark accommodates any AI model, efficiently managing authentication credentials while also tracking API usage costs. The system ensures a unified data format for requests across diverse AI models, meaning that updates to AI models or prompts won't interfere with applications or microservices, which simplifies the process of implementing AI and reduces ongoing maintenance costs. Developers can quickly integrate various AI models and prompts to generate new APIs, including those for tasks like sentiment analysis, translation, or data analytics, by leveraging tools such as OpenAI’s GPT-4 along with customized prompts. Moreover, the API lifecycle management feature allows for consistent oversight of APIs, covering aspects like traffic management, load balancing, and version control of public-facing APIs, which significantly boosts the quality and longevity of the APIs. This methodology not only streamlines processes but also promotes creative advancements in crafting new AI-powered solutions, paving the way for a more innovative technological landscape. As a result, APIPark stands out as a vital resource for anyone looking to harness the power of AI efficiently.

Hoppscotch streamlines the creation and testing of APIs, allowing for faster product launches and enhanced efficiency. You can build APIs rapidly, perform instant tests, and automatically document and share your projects with ease. Whether you're working on initial prototypes or preparing for final production, everything you need for smooth API development is conveniently provided by Hoppscotch, eliminating the need to switch between multiple tabs. The platform allows for the establishment of dedicated workspaces tailored for your teams, offering customizable access controls as necessary. Real-time collaboration with colleagues is facilitated, leading to improved teamwork and productivity. Additionally, you have the option to deploy Hoppscotch on your own servers, providing you with greater flexibility and control. Organizing requests into collections or folders makes it easy to share with team members, while managing environment variables ensures consistency throughout your projects. You can also maintain a comprehensive record of your request history for quick reference. With the ability to modify headers, authenticate requests, generate random data, and explore an array of other features, thorough API testing is easily achievable, including writing assertions to verify responses. Hoppscotch accommodates over 30 languages, making it accessible in your preferred language. You can monitor all activities within your workspace, noting who performed actions and when, enhancing accountability. The integration of your existing SSO provider simplifies login processes, allowing for efficient user, workspace, and resource management. Moreover, the platform’s user-friendly interface ensures that both beginners and seasoned developers can navigate it without difficulty, making API development a more enjoyable experience overall. This comprehensive suite of features, combined with its adaptability, truly makes Hoppscotch a valuable tool for any development team.

Thunder Client is a business located in 2021 in Ireland that's known for a software product called Thunder Client. Thunder Client includes online support. Thunder Client is Windows, Mac, and Linux software. Thunder Client offers a free version. Product cost starts at $3 per month. Thunder Client is a type of API management software. Thunder Client includes training via documentation. Alternative software products to Thunder Client are Testfully, RapidAPI, and Insomnia.

Restdb.io is a straightforward NoSQL web application that functions as a Database as a Service (DBaaS). It enables users to effortlessly set up an online database with minimal coding requirements. The platform features an intuitive browser-based admin interface and a secure REST API for enhanced accessibility. Additionally, it allows for task automation through simple "low-code" JavaScript hooks or background jobs, making it a versatile choice for various application workflows. For those just getting started, Restdb.io provides a free plan that accommodates up to three users, perfect for small projects or testing purposes. This combination of ease of use and powerful features makes Restdb.io a compelling option for developers and businesses alike.

NGINX Open Source powers more than 400 million websites around the world. Building on this robust foundation, NGINX Plus functions as an all-in-one software solution that combines load balancing, web serving, and content caching capabilities. By choosing NGINX Plus over conventional hardware load balancers, businesses can explore innovative opportunities without the constraints of traditional infrastructure, resulting in savings exceeding 80% while still achieving excellent performance and reliability. This versatile platform can be deployed across various settings, which include public and private clouds, bare metal servers, virtual machines, and containerized environments. Furthermore, the built-in NGINX Plus API streamlines the completion of routine tasks, thereby boosting operational efficiency. In an era where agility is essential, today's NetOps and DevOps teams require a self-service, API-centric approach that integrates smoothly with CI/CD workflows, which not only accelerates application deployments but also enhances the management of application lifecycles. As technology continues to advance rapidly, NGINX Plus emerges as an indispensable resource for improving operational flexibility and optimizing the use of available resources. It is a pivotal asset for organizations aiming to stay competitive in a fast-paced digital world.

Eliminate the necessity of creating back-end code with ease. Simply connect to your database using the server address or a connection string. Tailor your API methods by choosing the specific data you wish to read, update, delete, or modify. Your front-end development team now has access to your API without needing a back-end. PrestoAPI is compatible with SQL Server, MySQL, and PostgreSQL, ensuring versatility. Furthermore, you have the ability to assign roles to users within the application or for individual projects, enhancing security and organization. With robust protection provided by Identity Server, OAuth 2.0, and Active Directory, you can feel confident in the security of your application.

In just thirty minutes, you can create an API and share it with your colleagues or clients, enabling them to interact with a mock version without needing to write any code. This interaction allows you to collect essential feedback that helps you refine your design prior to actual development, ensuring that the final product aligns with the requirements of your developers. Think of this mock as the very essence of your API—robust, open-source, and thoughtfully crafted for developers. It effectively merges the ease of Markdown with the functionalities of automated mock servers, along with testing, validation, proxies, and code samples across various programming languages. It can often be difficult to foresee how an API will be used until you actually engage with it within a coding environment. Similar to how wireframes are fundamental in UI design, a server mock plays a comparable role in API development, allowing for quick prototyping before any coding begins. With just two clicks, Apiary can be linked to any chosen repository, giving you the choice to maintain the privacy of your API Blueprint or to open it up for public collaboration. Each time you make a change, we ensure that your API documentation is consistently updated, and we automatically synchronize any commits to your repository whenever you modify something in Apiary. This creates a productive feedback loop that not only enhances the quality and functionality of your API but also streamlines the entire development process, making it more efficient and responsive to user needs. Ultimately, utilizing such a tool promotes a more iterative approach to API design, fostering continuous improvement and engagement throughout the development cycle.

An innovative open-source framework has been developed to facilitate the architecture, creation, and deployment of solutions that leverage serverless infrastructure. This self-hosted serverless content management system is equipped with a headless GraphQL API, streamlined asset management, and a no-code builder ideal for crafting static pages and forms. It promises both scalability and cost-effectiveness, allowing your projects to expand seamlessly as requirements evolve. With integrated prerendering capabilities, your web pages can be easily indexed by search engines, significantly boosting their visibility. Moreover, the system supports comprehensive management of digital assets, featuring functions to resize and deliver images in multiple resolutions. Flexibility plays a crucial role, as users can adapt and enhance any aspect of the framework through custom plugins and tailored business logic. In addition, there are numerous built-in performance optimizations that ensure your websites maintain speed and can effectively handle rising traffic demands. This rich array of features empowers users to create not only robust but also high-performing web solutions that stand out in today's competitive online landscape. Ultimately, this framework offers a powerful toolset for developers looking to build next-generation web applications.

A comprehensive API Lifecycle Management solution supports agile API development and simplifies the tracking of essential performance metrics. It enables genuine hybrid API development in both cloud and on-premises environments, featuring a contemporary and adaptable architecture that integrates advanced security protocols. By driving rapid innovation, organizations can significantly improve operational effectiveness, which in turn can lead to increased profitability. Maintaining up-to-date security policies is vital for protecting sensitive data. Leveraging a unified integration tool allows for effortless portability across cloud and on-premises setups. Furthermore, specialized cloud management tools can streamline various administrative functions, including backup, restoration, and dynamic scaling. Full administrative oversight of the SOA server is provided through a web-based console, while SSH access to virtual machines guarantees secure and efficient system management. This all-inclusive method to API management not only maximizes performance but also significantly enriches the user experience, ultimately fostering greater customer satisfaction and loyalty. Emphasizing a holistic approach ensures that businesses remain competitive in a rapidly evolving digital landscape.

Kusk functions as an Open Source API Gateway, facilitating the quick creation, oversight, and launch of APIs in just a matter of minutes. It improves your API workflows by offering ready-to-use mocked responses and validated requests, while also effortlessly fitting into your chosen GitOps practices to automate the deployment of the API Gateway. By following the OpenAPI Standard, Kusk guarantees a unified source of truth for your API, thereby removing the necessity for additional configuration files and making management easier. This efficient method not only conserves time but also boosts consistency and reliability throughout your API ecosystem, ultimately leading to better performance and user satisfaction.

Tailor the platform to reflect your brand identity while ensuring all vital components are in place for effortless API integration. Create a swift and personalized onboarding experience that leads users from their first encounter with your service to complete integration. Keep an eye on user interactions within your platform and monitor API usage in real-time. Enable live testing capabilities, provide extensive management options for API keys, and include pre-built code snippets for convenience. Establish a notification system for sending emails, alerts, and updates based on API activity. Choose the most effective monetization model and test out different pricing options to find what works best. Strive for rapid accomplishment of the first API call while providing a distinctive user experience. Regularly upgrade your developer portal and pricing models to promote business growth, ensuring that your service developments are in line with user requirements and current market dynamics. Furthermore, continually solicit feedback from users to refine the integration process and improve overall satisfaction.

Identify the most appropriate APIs for your application to streamline its functionality by delegating non-essential features, resulting in more efficient applications. Testing and running our APIs require no programming skills, making them accessible regardless of your coding experience or preferred language. Integration is straightforward, allowing you to manage all your APIs from a unified platform. Our robust encryption and top-tier security measures ensure that your data remains protected and secure. You can depend on one provider to meet all your API requirements, no matter which technology stack you use. This approach not only enhances your productivity but also speeds up the development of your projects, enabling you to focus on what truly matters. Embracing these APIs can be a game-changer for your workflow.

Explore how Beeceptor can significantly elevate your development workflow, fast-tracking both API integrations and the software delivery process. Investigate the diverse scenarios that Beeceptor can effectively cater to for your specific requirements. By utilizing Beeceptor to host your API contracts, you can remove obstacles that might hinder your teams' progress. With the capability to set up a mock API server in just a few seconds, there's no requirement for coding, allowing you to bypass the wait for backend APIs to be built or launched. You can simply connect to a mock API server and begin integrating your applications immediately. Beeceptor empowers you to reduce dependence on backend or API teams. Acquire a named sub-domain to initiate an HTTP request, enabling you to examine and troubleshoot request/response payloads, improve their formatting, and collaborate with teammates by sharing them as API contracts. When you define an entity path, Beeceptor will automatically generate six essential JSON REST APIs for your CRUD operations. This solution serves as an alternative to JSONPlaceholder, providing a flexible schema, efficient data storage, and an incredibly easy setup process. It feels like effortlessly incorporating unavailable APIs into your current API server, which allows you to enhance your integration speed and boost overall productivity. By adopting Beeceptor, not only will your development efficiency increase, but your team's collaboration will also improve, fostering a more agile and responsive work environment.

An All-Inclusive Approach to API Development, Testing, and Security. Transform how you design, assess, and manage your APIs in a cohesive manner. Collaborate with your team, run tests on your local machine, and protect sensitive data throughout every stage of your project. Immediate Access, No Registration Needed Start utilizing our platform right away—remove the barriers of lengthy sign-up or login processes. Seamless Integration with VS Code & Desktop Tools Leverage our VS Code extension and desktop applications for effortless compatibility with your existing workflow. Protected Local Storage & Execution Ensure your data's security through local storage and execution, guaranteeing that private information stays on your device. Unlimited Testing of API Collections Easily test and oversee countless API collections, providing seamless scalability for all your projects. Create Mock Servers Streamline your development workflow by establishing mock servers that allow for quick testing and simulation of API responses. Intuitive Testing Environment & Playground Simplify the testing process with our user-friendly interface—discover APIs without needing any programming skills. Our sophisticated enterprise features enhance the overall management of your APIs, giving you more control and insight. Contact us today to learn more about how we can support your API journey!

Bruno is a cutting-edge, open-source API client that seeks to redefine the current market landscape, which is largely influenced by established tools such as Postman and Insomnia. Built on the core values of community collaboration and extensibility, our aim is to stay aligned with our mission. We concentrate exclusively on delivering a powerful API client, deliberately steering clear of unnecessary platform features that might compromise our primary purpose. Successful teamwork relies heavily on context and a cohesive environment, which is why we enable the storage of collections directly within your Git provider to maintain consistent version control. Security and privacy are our top priorities; Bruno operates offline and does not sync your data with any cloud services, ensuring our users can have complete peace of mind. By opting for Bruno, you are choosing a streamlined and effective method for API management that values your data and optimizes your workflow. Additionally, our commitment to continuous improvement means we actively seek feedback from our community to enhance future releases.

Fusio is an open-source solution tailored for effective API management, allowing users to easily create and manage REST APIs. This platform empowers you to quickly build a modern API, set up a dedicated developer portal, and explore various monetization strategies for your API. It boasts a user-friendly backend that enables thorough oversight of the complete API lifecycle. Moreover, Fusio comes equipped with a developer portal application that simplifies the initiation of your API program, acting as a central hub for developers to register and utilize your API. Out of the box, it provides numerous pre-built actions for diverse tasks, including proxying HTTP requests to an internal API or generating an API directly from a database table. This capability allows for Low-Code API creation, significantly reducing the requirement for intricate coding. In addition, Fusio's Worker-System accommodates the crafting of actions in multiple programming languages, such as Java, Javascript, PHP, and Python, thus offering flexibility in API development. As a result, developers can efficiently transform their API concepts into functional products while enjoying the freedom to choose their preferred coding languages and approaches. This combination of features makes Fusio an attractive option for developers aiming to streamline their API creation process.

DragonGlass serves as a highly scalable Platform as a Service (PaaS) infrastructure, adept at storing and processing various data types, including unmarshalling, indexing, and signature verification, from the Hedera Hashgraph Platform at a transaction per second (TPS) rate that rivals the Mainnet. Users can search for a range of information, including accounts, transactions, and smart contracts, in a manner similar to Google, facilitating easy access to nearly all data generated on the Mainnet. The platform provides a comprehensive suite of REST-based APIs, enabling developers to retrieve all necessary data seamlessly. Additionally, DragonGlass features a dApp Marketplace, where developers can showcase their applications, allowing users to explore detailed information about each dApp, including balance histories and payment records. This creates an integrated ecosystem that not only enhances user engagement but also promotes innovative dApp development.

Countless individuals. Infinite interactions. A singular API. The Nylas APIs are the driving force behind applications that seamlessly integrate email, calendar, and contacts, syncing data from any inbox worldwide. Nylas stands out as the sole provider of an API that encompasses all email, calendar, and contacts integrations. Users can enrich contact records by filling in any missing details. Additionally, a connection graph enhances introductions by making them more personal. By merging data from various address books, you can establish a unified data source, ensuring consistency and accuracy across platforms. This comprehensive integration transforms how applications interact with essential communication tools.

Pipedream is a platform designed for serverless computing and integration, offering a rapid way to connect APIs and run code seamlessly. It empowers developers to construct event-driven workflows that link various applications effortlessly. By creating event sources, developers can convert any API into an event stream, allowing them to monitor activities such as tweets, GitHub events, or updates from Airtable. This platform provides a user-friendly interface for inspecting events, triggering Node.js workflows with each event, and accessing these events through an API in their applications. The workflows are built using Node.js code steps that execute whenever an event occurs. Developers have the flexibility to write custom Node.js code and utilize any npm packages, or alternatively, they can reuse actions designed for popular APIs. Events can be triggered from various sources, including a custom URL, an email address, SDK code, or based on a predetermined schedule. Once authentication apps are connected, they function seamlessly within the workflow. Pipedream accommodates OAuth and key-based authentication, managing token refresh and the OAuth flow on the user's behalf. Users can simply link accounts to the workflow steps and input the necessary authentication details in their code. Furthermore, the ability to monitor multiple event sources simultaneously enhances the platform's versatility for developers.