Best Free Performance Testing Software of 2025

Obkio is a simple Network Monitoring and Troubleshooting SaaS solution that allows users to continuously monitor the health of their network and core business applications to improve the end-user experience. Obkio identifies the cause of intermittent network problems, VoIP, video, and applications slowdown in seconds so you can troubleshoot before they affect your end-users. Deploy network monitoring Agents at strategic locations in a company's offices or network destinations such as data sites, remote sites, external client sites, or public or private clouds to continuously monitor performance using synthetic traffic exchanged every 500ms. Obkio continuously tests and measures network metrics, such as latency, jitter, packet loss, quality of service and customer experience via QoE (Quality of Experience). The app alerts you as soon as a problem occurs or even if there are signs that a failure is about to happen. Not only does it alert you and pinpoint the source of the issue, but it also allows you to go back in time to complete a diagnosis.

Sematext Cloud provides all-in-one observability solutions for modern software-based businesses. It provides key insights into both front-end and back-end performance. Sematext includes infrastructure, synthetic monitoring, transaction tracking, log management, and real user & synthetic monitoring. Sematext provides full-stack visibility for businesses by quickly and easily exposing key performance issues through a single Cloud solution or On-Premise.

Optimizely is the global leader in Progressive Delivery and Experimentation. It empowers leading companies to test and deliver new features and experiences to their customers. It takes data-driven decisions, continuous experimentation, and constant innovation to create digital experiences that transform companies. Optimizely One will help you unlock your digital potential. It is essential to create human-centered digital experiences. Find out how to eliminate guesswork and make every interaction actionable. Commerce in the digital age goes beyond products, catalogs, and transactions. Selling online is about telling stories, evoking emotions and building trust. You don't owe anyone their business. Instead, you must earn it with each interaction.

Zebrunner is an AI-driven platform that seamlessly integrates manual and automated testing, enabling QA teams to collaborate efficiently. Its AI-enhanced capabilities streamline testing workflows by generating and autocompleting test cases, prioritizing failures, and delivering real-time insights. Zebrunner Test Case Management offers a powerful solution for organizing manual test cases. It features intuitive split-screen navigation, drag-and-drop editing, and customizable layouts, making test management more efficient. With real-time progress tracking, testers can quickly identify and resolve blockers or failures. Custom fields and filters enable tailored test management to fit project-specific requirements. Zebrunner Automation Reporting enhances automated testing by delivering advanced reporting and analytics. It integrates with popular frameworks such as TestNG, JUnit, and Cypress, providing real-time insights into test execution. Teams can easily monitor progress, analyze failures, and access logs or video recordings. With its comprehensive reporting capabilities, Zebrunner offers data-driven insights, helping teams optimize their testing efforts and make more informed decisions.

ZAPTEST is a leading Free and Enterprise software test automation and RPA tool. Computer Vision technology allows cross-platform digital interface automation for UI and API. This combined with our 1SCRIPT methodology, seamless automation, parallel execution, and unlimited licenses, will result in a testing suite that generates up to 10X ROI. ZAPTEST will automate any procedure you can do via any digital interface (live app or mockup). Discover the unparalleled advantages of partnering with ZAPTEST Our partners are essential in providing businesses with innovative, industry-leading automation solutions that transform software testing and RPA processes. ZAPTEST empowers organizations with a unified automation platform that streamlines both software testing and business operations. Our unlimited licensing model ensures you can scale effortlessly, transforming your business into an agile, efficient powerhouse.

Apptim empowers mobile developers to test their apps and analyze the performance to avoid any issues before they go live. You can measure app render times, power consumption and resource usage on Android and iOS devices. In less than 5 minutes, you can get your first test results and compare the performance of different app versions. Try Apptim for free today and release with confidence: https://bit.ly/3ert9yQ

Alithya GoTest is a collaborative test hub that is easy and quick to master and integrate, ensuring the quality of any professional digital solutions for companies requiring reliability without compromises. Through the GUI, our solution allows you to collaborate, execute and fix your tests and communicate at all levels to ensure test plans and test results are provided with the right level of details. Alithya GoTest is platform-agnostic and will allow you to seamlessly test desktop, web and mobile applications. You will not have to spend months building, maintaining and integrating your test platform into your development workflow, which allows your development team to focus on delivering value and quality. Compared to more traditional solutions, Alithya GoTest is the only tool on the market that allows you to completely test your software from end-to-end using continuous testing in a DevOps process. Contact our top-notch bilingual support team or use our consulting, coaching or online training resources to get up to speed in no time. Benefit from our growing list of pre-made test suites for professional ERP platforms like Oracle Fusion Cloud to ensure updates are not breaking your software solution.

Perform Performance Tests on Digital Products/Services in a Matter of Minutes Avoid a steep learning curve... Design, Run and Save your JavaScript Code Tests to Automate Your Learning. * Create threads as complex or as simple as you need. Simulate diverse and real scenarios simultaneously for your JavaScript code tests. * Create and run performance tests using one tool. * Tests for any platform, no matter where it is hosted, in the cloud, or on a traditional server. * Continuously test with CI/CD integrated instruments, automate performance testing. * Access data in real time, catch blind spots, and solve them before the user. * Simulate hundreds of thousands of users in a realistic simulation using virtual browsers

All online enterprises should be utilizing a variety of network monitoring tools to keep track of their uptime and overall performance. Unlike conventional synthetic monitoring tools, which depend on testing endpoints through agents located in data centers, CloudPerf stands out by operating on a global network of real-user devices, providing comprehensive end-to-end insight into performance problems. It's important to note that performance analysis extends beyond merely measuring page load times; users can investigate specific resources through waterfall charts or export the HAR file for analysis in their preferred tools. Assessing the entire page load is critical for evaluating the influence of third-party dependencies on performance across various locations. CloudPerf allows multiple alerts to be set for each monitored destination, each with its own uptime and performance criteria. When these defined thresholds are exceeded, CloudPerf promptly notifies your designated contacts for further action, ensuring that any performance issues are addressed swiftly and effectively. This level of monitoring is essential for maintaining the health of an online business's digital presence.

Open Architecture for Building and Running Load Testing. You need to quickly load test your home page, one URL within your site, or a mobile API endpoint. You can quickly create simple tests and scale them to thousands of users in a matter of minutes. Apache JMeter and WebDriver go beyond being open-source tools for cloud load testing. They are vibrant communities with deep knowledge that are built on real user needs. Open load tests allow you to write load tests in the languages and utilities that you use every day. You can create custom tests in Python or PHP. Load testing is easy, cheap, and open to everyone. This is possible thanks to an open architecture that allows tuning and control over the setting up of cloud load agents.

All-in-one cloud testing platform for performance testing, load testing, website speed testing and website UI testing. Mobile applications and API endpoints are all covered. JMeter testing is easy from multiple cloud locations, with thousands of users. Apache JMeter allows you to see real-time performance metrics of your website and APIs from the cloud. You can monitor changes over time and receive advice on how to speed up page loading times. We run your tests on cloud instances at set times and notify you if anything goes wrong. To find rendering issues, invalid HTML, missing or incorrect CSS, load your web pages and websites in mobile emulators. In seconds, schedule runs and inspect the rendered images on all devices. Simulate your site on different screen sizes and resolutions. Take screenshots of two websites in seconds. To check for differences, you can compare the generated screenshots using a threshold.

Incredibuild is the leading platform for development acceleration. Our platform speeds up developer and CI builds with our distribution and caching technologies, cutting down wait times from hours and days to minutes. Most importantly, we do so without changing your code, tools, or processes, on prem or on the cloud. Incredibuild gives you better visibility into your builds, significant acceleration, and smarter build asset orchestration for 8-10x faster builds. Incredibuild is used by over 200,000 developers and managers in more than 2,000 companies, including top brands like Microsoft, Amazon and Citibank, Adobe and Disney, Intel, Samsung and EPIC Games, Nintendo, among others. This allows them to turbocharge their development and delight their customers.

Optimize your testing process with QADeputy, where you can effectively oversee your test cases, suites, runs, and reporting in a single platform. Seamlessly connect with your preferred automation and bug tracking tools while simplifying communication with stakeholders. Tailor the system to accommodate your specific testing requirements. Manage your test cases through a centralized system that allows for easy importing using our CSV/Excel utility. Organize test suites and plans to ensure your team is consistently testing the newest features with confidence. Enhance efficiency by streamlining test runs, enabling test engineers to concentrate on what truly matters—quality testing. Utilize straightforward, ready-to-use integrations for your automation tools, communication platforms, and bug tracking systems. Clearly define your requirements, monitor coverage, and keep your team synchronized throughout the testing process. Additionally, customize various aspects such as fields, statuses, reusable snippets, configurations, and tags to maximize efficiency during testing, making your process not only effective but also uniquely suited to your team's workflow. This comprehensive approach ensures that every aspect of your testing is optimized for success.

The most powerful open-source load testing tool for stress and load testing. When you are working with security regulations, get your dedicated IPs from around the world to simulate user loads for your load testing. Your automated Selenium test scripts can be used for performance testing. Instead of using local data centers, create load from other regions to test for load. Amazing reporting features that display tabular and graphical data allow you to monitor app performance during tests. You can now shift left and integrate performance tests into your DevOps process using your favorite CI tool. APM tools can monitor the app infrastructure. Performance Testing is a type software testing that ensures that the application performs well under the user load. Performance testing is not intended to find bugs, but to identify performance bottlenecks. It assesses the system's quality attributes.

The leading solution for web automation, data extraction, and testing has been enhanced with Chromium browser technology, enabling compatibility with all contemporary websites. This includes support for platforms utilizing dialog boxes, Javascript, Flash, Flex, Java, and AJAX. You can execute in-browser tests seamlessly across both Chrome and Firefox. Data can be saved in standard file formats or directly sent to a database via the API. iMacros web automation software is designed to work with any website, simplifying the process of recording and replaying repetitive tasks. Users can automate actions across Chrome and Firefox without having to learn a new scripting language, making it straightforward to automate even the most intricate processes. This tool facilitates functional, performance, and regression testing on modern websites while precisely capturing web page response times. Furthermore, you can schedule macros to run at regular intervals against your live website, ensuring it remains operational and performs as expected. With such capabilities, iMacros empowers users to enhance productivity and maintain website functionality effortlessly.

Create your simulation utilizing the user-friendly, no-code interface or opt for complete automation through the fully WireMock-compatible API. You can replicate stateful interactions in your simulated API by employing a straightforward finite state machine model. Push your application to its limits by introducing various challenges such as delays, lost connections, slow responses, and corrupted HTTP payloads. The collaborator cap on a MockLab plan refers to the cumulative number of distinct collaborators plus team members that the primary account can include; for instance, if your plan allows for 2 collaborators, it means you and 2 of your coworkers can engage in API development together. By utilizing these techniques, you can thoroughly evaluate your application's resilience and performance under challenging conditions.

Loadster is a load test platform for websites, web apps, and APIs. Loadster can identify a site's breaking point before you users. To find bottlenecks, improve performance, or prevent crashes, create realistic test scripts.

Elevate your debugging and web performance skills with an advanced in-browser HTTP sniffer that allows you to analyze network traffic produced by a web page without the need to switch to an external tool. This tool enables precise measurement of a web page's network performance while uncovering potential enhancements to its speed, all without needing additional configurations or proxies—even for encrypted HTTPS traffic! Instantly identify vulnerable SSL configurations and other security-related concerns on your web server. The free Basic Edition allows anyone to send you comprehensive log files, facilitating remote error diagnosis and performance troubleshooting. Furthermore, the HttpWatch API empowers you to gather performance metrics from your automated website testing. Fully compatible with Chrome, Edge, and Internet Explorer, HttpWatch displays the HTTP and HTTPS traffic generated during web page access, and by selecting a request, you can view all relevant information conveniently organized in a tabbed interface. This seamless integration ensures that you have all the necessary insights at your fingertips to optimize your web applications.

Testin's application service platform offers a comprehensive suite of testing, security, promotional, product optimization, and AI data services tailored for over a million developers and businesses globally. Their device farm boasts a wide array of popular devices, which is consistently updated to ensure relevance. Developers can conveniently access these devices via a web portal or through ADB, enabling them to swiftly identify issues with their applications on chosen devices. Additionally, a compatibility testing service is available to assist in crafting scripts that address the primary functions of your app, whether running on selected devices or across all popular models in their testing facility. This setup allows for the rapid detection of functional, UI, and other compatibility concerns, while also delivering essential debugging information, such as testing steps, screenshots, logs, and detailed bug descriptions for efficient troubleshooting. Furthermore, offshore testers develop tailored test plans that align with your app's category and specific requirements. By employing diverse testing methodologies and examining various real user scenarios, they diligently uncover hidden defects that might otherwise go unnoticed. Ultimately, this thorough approach ensures a robust and polished final product.

Eggplant empowers organizations to create incredible digital experiences. We help businesses monitor, analyze and improve their customer experience. Eggplant is used by companies around the world to outperform their competitors, increase productivity, and delight customers. How does Eggplant work? How? By dramatically improving the quality, responsiveness and performance of their software apps across different interfaces and platforms, browsers and devices -- including mobile, IoT and desktop -- in agile, DevOps and innovative application and data environments.

Gatling is a web application load and performance testing tool. Gatling was created by former IT consultants and is intended to make DevOps easier and more automated.

Catch, report and fix bugs faster. Screen recording with console logs Have you found a bug? You can create a screen recording by closing another application. Bird replays automatically include console logs as well as other technical data (browser and OS, screen size, etc.). To help developers spend less time fixing bugs and unnecessary back-and forth. More information about Bird Who is Bird for? Web development teams are primarily PMs, Engineers and QA. Designers are also important. Bird can also be used by non-technical employees to improve bug reports. Quick setup Takes quite literally 5 minutes. You don't need any technical or coding knowledge. JavaScript error tracker Bird will automatically notify you of JavaScript errors on pages that you choose.

Introducing a comprehensive automation solution for the testing of digital applications on a large scale, the eureQa platform is revolutionizing the landscape of test automation. This all-encompassing platform supports a wide array of testing types, including functional, cross-browser/device, mobile, performance testing, and synthetic monitoring, all integrated within a single enterprise-level cloud platform, thus empowering organizations to manage their digital operations efficiently. Leveraging cutting-edge Artificial Intelligence (AI) and Machine Learning (ML) technologies, eureQa equips businesses with essential tools to enhance user experiences and elevate overall quality. As digital applications become increasingly vital for commerce and enterprise software, eureQa stands as a contemporary automation platform specifically designed to expedite the testing processes of these applications. With a focus on accelerating time to market, eureQa facilitates the swift rollout of updates and new features for eCommerce applications and enterprise SaaS solutions, ensuring businesses remain competitive and responsive to market demands. This innovative approach not only streamlines the testing lifecycle but also supports ongoing digital transformation initiatives across various sectors.

PFLB specializes exclusively in performance testing. We help companies identify and resolve performance bottlenecks, such as slow database queries or API calls that are not performing well. We are the company of choice for clients who need performance testing across a wide range of technologies, such as web and mobile applications and core banking systems. We offer a wide range of solutions for JMeter, LoadRunner and other environments. PFLB is a load testing platform that allows companies to perform efficient and scalable performance test. PFLB is a global leader in performance testing with over 15 years' experience.

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.