Best API Testing Tools for Freelancers - Page 4

Find and compare the best API Testing tools for Freelancers in 2025

Use the comparison tool below to compare the top API Testing tools for Freelancers on the market. You can filter results by user reviews, pricing, features, platform, region, support options, integrations, and more.

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    Qyrus Reviews
    Employ web, mobile, API, and component testing to ensure smooth digital experiences for users. With our platform, you can confidently test your web applications, providing the reliability needed for optimal speed, enhanced efficiency, and reduced costs. Take advantage of the Qyrus web recorder, which operates within a low-code, no-code framework, enabling quicker test creation and shorter time to market. Enhance your script coverage through advanced test-building functionalities, such as data parameterization and the use of global variables. Utilize the scheduled runs feature to execute thorough test suites effortlessly. Incorporate AI-driven script repair to address issues of flakiness and brittleness that arise from changes in UI elements, thereby maintaining the functionality of your application throughout its development life cycle. Centralize your test data management with Qyrus’ Test Data Management (TDM) system, streamlining the process and removing the hassle of importing data from various sources. Additionally, users can generate synthetic data within the TDM system, facilitating its use during runtime and ensuring a smoother testing experience. This comprehensive approach not only enhances user satisfaction but also accelerates the overall development process.
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    Kusho Reviews
    Transform your Postman collection into comprehensive test suites that seamlessly integrate with your CI/CD pipeline. By simply providing a link to your Postman collection, you can generate detailed test suites efficiently. Additionally, you can engage Kusho AI with fundamental API details for manual prompts. This tool operates in harmony with your development workflow and automatically updates as needed. In today's fast-paced software teams, multitasking is essential, yet the process of writing test cases can consume significant time that developers could spend on other critical tasks. At KushoAI, we are creating an innovative AI agent designed to alleviate the burden of API testing from developers. This allows them to concentrate on their core competencies, resulting in smoother product releases than ever before. You can generate thorough test suites for each API, ultimately saving countless hours of manual effort. The system is adaptable to align with your organization's specific needs; just provide additional prompts in natural language and receive test code in mere seconds. KushoAI adeptly interprets your natural language requests and delivers test case code instantly. Furthermore, KushoAI has the capability to automatically execute pertinent test suites at any phase of your CI/CD pipeline, ensuring that your testing process remains efficient and effective. Embrace a future where developers can maximize their productivity while relying on intelligent tools like KushoAI for thorough and timely testing.
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    KeyRunner Reviews

    KeyRunner

    Launchiam

    $39/month/user
    A Comprehensive Solution for Developing, Testing, and Securing APIs. Revolutionize the way you create, evaluate, and oversee your APIs. Work collaboratively, execute tests locally, and safeguard sensitive information throughout the entire process. Instant Access, No Signup Required Begin using our platform immediately—eliminate the hassle of cumbersome registration or sign-in procedures. Integrations with VS Code & Desktop Applications Utilize our VS Code extension and desktop applications to ensure a smooth integration with your preferred working environment. Secure Local Storage & Execution Maintain the safety of your data through local storage and execution, which guarantees that confidential information remains on your device. Unlimited Collection Testing Effortlessly test and manage an infinite number of API collections, allowing for seamless scalability across all your initiatives. Create Mock Servers Enhance your development process by setting up mock servers that facilitate rapid testing and simulation of API responses. User-Friendly Testing & Playground Make testing easier with our intuitive interface—explore APIs without the need for any coding. Our advanced enterprise capabilities elevate your API management experience. Reach out to us for more information and to see how we can assist you further!
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    Testlemon Reviews

    Testlemon

    Testlemon

    $10/month
    Attract authentic and pertinent followers, enhance your visibility, and expand your connections - all conveniently within a single platform. This comprehensive solution allows you to streamline your networking efforts effectively.
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    Requestly Reviews

    Requestly

    RQ Labs, Inc.

    $0
    The Requestly API Client provides an array of features designed to assist in the effective design, management, and testing of APIs. This innovative tool serves as a valuable asset for both developers and quality assurance professionals, thanks to its unique combination of functionalities. 1. API Design: Requestly enhances the API design process by enabling users to create specific API requests while defining HTTP methods, headers, query parameters, and request bodies with ease. 2. API Request Execution: Central to API testing is the ability to send API requests, with detailed views available for responses that encompass status codes, headers, and payload content. 3. Organizing API Collections: By utilizing collections, users can neatly group related API requests, improving organization and facilitating teamwork. 4. Use of Variables: Requestly streamlines the API management and testing processes by allowing users to substitute hardcoded values with placeholders, including Collection, Environment, and Global Variables. 5. Scripting Capabilities: The inclusion of pre- and post-scripts enables users to apply logic or make modifications to requests prior to sending them, as well as to process responses and adjust variables for future API calls. This comprehensive suite of tools makes Requestly an essential resource for anyone involved in API development and testing.
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    Runscope Reviews
    An API Monitoring test using Runscope consists of one or multiple HTTP requests executed in a sequence to assess the availability, speed, and accuracy of an API. During each phase of the test, you can set up Assertions to check the response data and utilize Variables to retrieve information for later requests. A test is considered successful if all assertions are satisfied, whereas it will fail if any assertion does not hold true or if an error occurs, such as issues with the network connection. It’s crucial that your clients are not the ones informing you about service outages or malfunctions. Runscope integrates with your existing notification platforms like PagerDuty, Slack, HipChat, email, webhooks, and others. By actively monitoring your service performance, you can swiftly identify and troubleshoot API issues. Utilize the API Dashboard and daily API Performance Report to stay ahead of sporadic failures before they escalate into significant concerns. Ensure that your API calls' structure and content align with your expectations, as powerful and flexible assertions provide you with comprehensive control over the testing process. With these tools in hand, you can maintain a robust and reliable API experience for your users.
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    Swagger Reviews
    Enhance the efficiency of API development for individuals, teams, and large organizations using the Swagger open-source and professional suite of tools. Discover how Swagger can assist in designing and documenting APIs effectively on a large scale. The strength of Swagger tools is rooted in the OpenAPI Specification, which serves as the industry standard for designing RESTful APIs. There are various tools available to create, modify, and share OpenAPI definitions with different stakeholders. For comprehensive support of OpenAPI workflows, SwaggerHub serves as the platform solution that scales effectively. Millions of API developers, teams, and enterprises have benefited from Swagger's tools to create exceptional APIs. With Swagger, you gain access to the most robust and user-friendly tools that leverage the full potential of the OpenAPI Specification, ensuring a seamless development process that can adapt to evolving needs.
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    SOAtest Reviews
    PARASOFT SOATEST Artificial Intelligence and Machine Learning Power APIs and Web Service Testing Tools Parasoft SOAtest is based on artificial intelligence (AI), machine learning (ML), and simplifies functional testing across APIs and UIs. The API and web service testing tool is perfect for Agile DevOps environments because it uses continuous quality monitoring systems to monitor the quality of change management systems. Parasoft SOAtest is a fully integrated API and web-service testing tool that automates end-to-end functional API test automation. Automated testing is simplified with advanced functional test-creation capabilities. This applies to applications with multiple interfaces (REST and SOAP APIs as well as microservices, databases, etc.). These tools reduce security breaches and performance issues by turning functional testing artifacts in security and load equivalents. This allows for faster and more efficient testing, while also allowing continuous monitoring of API changes.
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    Autostub Reviews

    Autostub

    Torry Harris Business Solutions

    AutoStub® serves as a vital resource for accelerating the API development process. By enabling rapid design, prototyping, documentation, and testing of APIs, it can greatly minimize build times. This tool generates a working mock that empowers developers to engage with APIs even before their complete implementation. It is offered as a SaaS solution, available for onsite installations, and can also be utilized in a hybrid configuration. Notable Features - Ability to simulate both ReST and SOAP services - Accepts Swagger files for ReST and WSDL files for SOAP services as input formats - Supports various methods such as GET, POST, PUT, and DELETE for ReST APIs - Facilitates the creation of mock services based on WSDL/Swagger 2.0, along with generating placeholder data for API testing - Provides an endpoint URL compatible with third-party SOAP client tools - Enhances quality assurance by allowing for comprehensive functional testing - Capable of managing multiple test scenarios simultaneously, ensuring a more streamlined development experience.
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    IBM Rational Test Workbench Reviews
    IBM Rational Test Workbench offers an array of software testing tools designed to enhance a DevOps approach, including API testing, functional UI testing, performance testing, and service virtualization. By enabling automation and encouraging earlier testing, it allows teams to identify and resolve issues sooner, ultimately reducing the cost of fixes. Additionally, IBM has introduced a new bundled offering that revolutionizes how DevOps software can be utilized and deployed, facilitating easier planning for the adoption and expansion of essential IBM DevOps products. This solution supports a comprehensive range of testing types, such as traditional functional and regression tests, mobile testing, and performance and scalability assessments. With a fully-integrated authoring environment, users can enjoy a seamless experience across various domains. Rather than waiting for all components to be available, teams can create virtual components to initiate testing immediately, ensuring that development remains agile and efficient. Embracing this approach fosters continuous improvement and quicker delivery cycles in software development.
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    Imvision Reviews
    Enterprises implement robust measures to secure their APIs throughout their entire lifecycle, ensuring protection regardless of their location. Achieving comprehensive visibility is crucial, as it allows a deep understanding of the underlying business logic that drives these APIs. By conducting thorough analyses of full API payload data, organizations can identify endpoints, usage trends, expected workflows, and any potential exposure of sensitive information. Imvision enhances this process by enabling the discovery of hidden vulnerabilities that go beyond conventional rules, thereby thwarting functional attacks and facilitating proactive measures against potential threats. Moreover, the application of Natural Language Processing (NLP) ensures high detection accuracy across large datasets while offering clear insights into the findings. This technology excels at recognizing ‘Meaningful Anomalies’ by interpreting API data as a language, thus revealing the functionalities of APIs through AI that models intricate data interrelations. It is also adept at identifying behavioral patterns that may attempt to tamper with the API logic at scale, allowing organizations to grasp anomalies more swiftly and in alignment with their business objectives. Ultimately, leveraging these advanced methodologies empowers enterprises to stay one step ahead of potential attackers while safeguarding their critical API infrastructure.
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    WireMock Reviews
    WireMock is a tool designed to simulate HTTP-based APIs, which some may refer to as a mock server or a service virtualization solution. It proves invaluable for maintaining productivity when a necessary API is either unavailable or incomplete. The tool also facilitates the testing of edge cases and failure scenarios that a live API might not consistently reproduce. Its speed can significantly decrease build times, transforming hours of work into mere minutes. MockLab builds on WireMock by providing a hosted API simulator that features an easy-to-use web interface, allows for team collaboration, and requires no installation. The API is fully compatible and can replace the WireMock server effortlessly with just a single line of code. You can operate WireMock from a variety of environments, including Java applications, JUnit tests, Servlet containers, or as an independent process. It offers the ability to match request URLs, HTTP methods, headers, cookies, and bodies through numerous strategies. Additionally, it provides robust support for both JSON and XML formats, making it simple to get started by capturing traffic from an existing API. Overall, WireMock serves as a crucial resource for developers seeking to streamline their API testing processes.
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    42Crunch Reviews
    The true asset in your intelligence framework lies not in AI, but in the expertise of your developers. Equip them with the necessary tools to take charge of API security, ensuring consistent and exceptional protection throughout the entire API lifecycle. Integrate your OpenAPI definition seamlessly into your CI/CD pipeline to enable automatic auditing, scanning, and safeguarding of your API. By evaluating your OpenAPI/Swagger file against over 300 security vulnerabilities, we will prioritize them according to severity and provide precise remediation instructions, thus embedding security into your development processes effortlessly. Implement a zero-trust architecture by verifying that all APIs adhere to a defined security standard prior to production, actively scanning live API endpoints for potential risks and automating redeployment as needed. Maintain the integrity of your APIs from the design phase to deployment, gaining comprehensive insights into attacks targeting APIs in production, while also defending against threats without compromising performance. This proactive approach to security not only strengthens your defenses but also fosters a culture of vigilance within your development team.
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    ApiScout Reviews

    ApiScout

    ApiScout

    $5 per month
    ApiScout serves as a comprehensive platform for the creation, evaluation, and documentation of REST APIs, boasting impressive speed without the need for waiting, restarts, or loading indicators, and is optimized for all Mac devices. You can easily craft requests and analyze responses with its user-friendly interface. As an indispensable HTTP Client tool, ApiScout streamlines the API development process, allowing you to categorize requests into organized folders for better management. Furthermore, it supports the use of dynamic values, enabling you to incorporate calculations, previous response data, environment variables, and computed hashes into your requests seamlessly. Environment variables are particularly useful for clustering related values, making it easy to switch between different user accounts or servers. By defining reusable variables such as tokens, base URLs, or credentials, you can enhance your workflow, ensuring a smooth transition between development and production environments. This level of organization and efficiency makes ApiScout an essential tool for any developer working with APIs.
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    HTTPie Reviews
    HTTPie is revolutionizing the way APIs are accessed and utilized, making the process straightforward and user-friendly for developers creating the technologies of today. Featuring AI assistance, neatly organized HTTP methods in tabs, a convenient context menu for libraries, and support for cURL input mode, it combines all the ease of our terminal version with a modern graphical interface. This open-source API testing tool is designed for innovative thinkers, earning the trust of developers worldwide for their API testing needs. Among our users are engineers from leading tech companies who are at the forefront of driving significant change. Our mission focuses on simplifying and enhancing the API experience for all creators of tools, applications, and advanced technologies. We are firm believers in the transformative power of APIs to improve our world. Users can interact effortlessly with various APIs while harnessing the benefits of AI-assisted functionalities. Additionally, our platform allows for efficient work organization through spaces, collections, and tabs, enabling users to parameterize requests using variables and environments. With features like auto-save and real-time synchronization across devices, developers can build and preview requests without the need to send them immediately, fostering a more effective and intuitive workflow.
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    DevKit Reviews
    The Ultimate AI Companion for Developers. DevGPT merges the capabilities of ChatGPT with over 30 specialized mini-devtools, enabling you to effortlessly test public APIs, access databases, generate code, and create interactive art—all in mere seconds, ultimately saving you countless hours each week! Rapidly develop features and test them independently before integrating them into your codebase with assurance. Unleash your inner creative coder by utilizing our code generation and p5.js tools to craft eye-catching art and engaging mini-games. Our vibrant community of over 250 developers on Discord is just the beginning; Pro users can take advantage of an even more exclusive sub-community. Enjoy the convenience of having all your preferred tools consolidated in one platform, eliminating the hassle of juggling multiple apps, websites, and command-line tools. This streamlined approach significantly minimizes context-switching, allowing you to enhance your overall productivity and focus on what truly matters. Embrace the future of development with DevGPT and transform your coding experience!
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    ContextQA Reviews
    ContextQA is an innovative solution designed to help organizations boost their automation testing capabilities, improve software quality, accelerate product release timelines, and significantly reduce costs associated with maintaining software standards by leveraging AI-powered SaaS technology. By transforming manual test cases and user stories into automated tests, AI agents streamline the testing process. Additionally, ContextQA gathers evidence and conducts root-cause analysis when bugs are detected. It identifies key user journeys and highlights deficiencies in the software testing framework. With comprehensive end-to-end testing, including contract testing, there is no longer a necessity for distinct tools for front-end and back-end testing. It allows for the identification of issues, performance improvements, and ensures smooth user interactions across various browsers, mobile devices, and operating systems. Furthermore, ContextQA makes it easier to integrate test cases with minimal effort, facilitating a swift increase in automation coverage for your products and services while ultimately enhancing productivity and efficiency.
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    Stellar Reviews
    Accelerate your testing workflows using Stellar’s low-code automation platform. Boost productivity, reduce mistakes, and attain more intelligent software testing through seamless solutions for UI, API, mobile, performance, and accessibility assessments. Enable your team to conduct more tests while experiencing less stress, thanks to easy integration and sophisticated analytics tools. With Stellar, you can transform your testing approach and unlock new levels of efficiency.
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    Devzery Reviews

    Devzery

    Devzery Technologies

    $25
    Devzery, an AI-powered platform, revolutionizes API regression tests with codeless automation. It also integrates seamlessly CI/CD. It allows teams to create, manage, and execute tests with minimal manual effort, while increasing coverage. Devzery supports multiple programming languages and offers intelligent change detection, automated update of test cases, and detailed reporting. It provides comprehensive API validation including performance and security tests, helping teams to deliver robust, high quality software faster. Devzery is perfect for startups and enterprise, as it streamlines QA and minimizes risks. It also accelerates development timelines.
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    ApiOnCloud Reviews

    ApiOnCloud

    App Api-On-Cloud, LLC

    $0
    Our groundbreaking tool transforms the landscape of API development and testing, ensuring that the process is straightforward, visual, and open to all users. Wave farewell to intricate commands and tedious coding—effortlessly create mock REST API endpoints using our user-friendly graphical interface. What Makes Our Mock API Tool Stand Out? No Coding Necessity: Build APIs through visual means, catering to individuals with varying levels of expertise. Robust Automated Testing: Identify potential failure points in the applications that utilize your APIs with our integrated automated testing features. In-Depth Simulations: Evaluate and mimic a wide range of real-world situations to guarantee reliable API functionality. Designed for developers, testers, and newcomers alike, our tool streamlines the entire process, conserving both time and resources while enhancing the overall quality and reliability of your API-based integrations. Users can confidently navigate API challenges with ease, making their development journey far more efficient and enjoyable.
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    RestSequence Reviews
    RestSequence is a no-code platform that enables users to construct comprehensive product test workflows by utilizing the APIs of the products being tested. It allows for the efficient creation, management, and execution of test cases and scenarios. Leveraging an application's Swagger API collection, RestSequence facilitates the rapid design and testing of scenarios, ensuring exceptional performance and reliability of applications. Users can onboard generated test scenarios seamlessly, integrating them into their CI/CD pipeline for execution during nightly, weekly, or release builds. Notably, the output file generated from a single use of RestSequence can be repurposed for future testing scenarios without requiring any modifications. Additionally, RestSequence accesses and interprets API details, including method, URL, payload, and request body, from a Swagger specification file. It thoroughly tests each API endpoint to confirm accurate responses, status codes, mandatory fields, and the handling of invalid data, while also monitoring the resources created throughout the testing process. This approach not only streamlines the testing procedure but also enhances the overall efficiency of the development lifecycle.
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    HCL OneTest Reviews

    HCL OneTest

    HCL Technologies

    HCL OneTest offers software testing tools to support a DevOps strategy: API testing, functional and UI testing, performance testing, and service virtualization. It allows you to automate and run tests faster and more often to find errors sooner, which is when they are cheaper to fix. HCL also offers a bundled offering that can be used under a new consumption model. This will change the way you use and deploy DevOps Software. This new offering simplifies your planning for the adoption and growth critical DevOps products.
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    JMeter Reviews

    JMeter

    Apache Software Foundation

    Apache JMeter™ is an open source tool developed in pure Java, intended for conducting load tests to assess functional behavior and performance metrics. Initially created for web application testing, its capabilities have grown to encompass various testing functions. This versatile software can evaluate the performance of both static and dynamic resources, including web applications that are dynamic in nature. By simulating substantial loads on a single server or a network of servers, it allows users to examine the system's resilience and analyze its performance across different types of loads. As a result, Apache JMeter has become an essential tool for developers and testers seeking to ensure optimal performance and reliability in their applications.
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    ITRS Load Testing Reviews
    Scalability of websites, apps, and APIs is guaranteed For the always-on enterprise. You can control the bandwidth and ramp of millions or thousands of virtual users around the world and simulate real-world dynamics. Integrate with Dynatrace, New Relic and AppDynamics to drill down and pinpoint the root-cause. You can measure the user experience quality by looking at real browser render times and screenshots as tests are running. You can get feedback in real-time, adjust parameters as you go, and determine the optimal concurrency points, breakage points, and peaks. Consumer expectations are high. Users expect a near instantaneous experience on all devices and at all times. Business and IT leaders must recognize that their mission-critical application stacks are growing and becoming more complex. Visitors are driven away by slow response times, performance bottlenecks, or full-blown website or application failures. This can lead to lost revenue and reputational damage.
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    Levo.ai Reviews
    Levo.ai provides enterprises with unparalleled visibility into their APIs, while discovering and documenting all internal, external, and partner/third party APIs. Enterprises can see the risk posed by their apps, and can prioritize it based upon sensitive data flows and AuthN/AuthZ usage. Levo.ai continuously tests all apps and APIs for vulnerabilities as early as possible in the SDLC.