Best Free Load Testing Tools

ZAPTEST is a leading Free and Enterprise software test automation and RPA tool. Offerings include Computer Vision technology that allows for Cross-Platform digital interface automation for UI, API, Load testing, and RPA in a seamless process. Combine that with our 1SCRIPT methodology, seamless automation, parallel execution, and unlimited licenses– you get an efficient testing suite that generates up to 10X ROI. We promise that if you can perform a procedure via any digital interface (live application or mockup) manually, ZAPTEST can automate this procedure As-Is! With ZAPTEST’s Enterprise Solution subscription program, you receive unlimited licenses across the entire organization. Regardless of whether your automation needs increase, your cost remains fixed. FARM allows ZAPTEST users to manage all of their devices so you can remotely control cross-environments and projects from any location. ZAPTEST uses many practical applications to enhance its software testing software capabilities

Design, debug, and test APIs like a human, not a robot. Finally, a workflow you'll love. The Collaborative API Design Tool for designing, testing and managing OpenAPI specifications. The Desktop API client for REST and GraphQL. Make requests, inspect responses. Quickly create and group requests, specify environment variables, authentication, generate code snippets, and more. Get all the details on responses. View the whole request timeline, status codes, body, headers, cookies, and more. Create workspaces, folders, environments, drag-and-drop requests, and easily import and export your data. Create, edit, lint, debug, preview, and manage all of your OpenAPI specs in one collaborative API design editor. Generate configuration for common API gateways such as the Kong API Gateway, and Kong for Kubernetes. Sync your API designs with source control such as Github / Gitlab, and deploy directly to API Gateways such as Kong with one click.

Use the most powerful open source load testing tool for load and stress testing. Get your dedicated IPs from all over the world to simulate user load for your load tests when you work with security regulations. Use your automated test scripts developed with Selenium for performance testing. Rather than using just local data centers, generate load from different regions more realistic load tests. Monitor app performance during test runs by amazing reporting features with tabular or graphical data. Shift left and integrate your performance tests into DevOps process with your favorite CI tool. Monitor app infrastructure with APM tools. Performance Testing is a type of software testing which guarantees that the application is performing well under the defined user load. Main purpose of performance testing is not to find bugs but to eliminate performance bottlenecks. It evaluates the quality attributes of the system.

Keysight Eggplant is an AI-powered software testing platform that helps teams automate functional, regression, and performance testing across any system or platform. Built to eliminate repetitive manual testing, it ensures faster releases, broader coverage, and higher-quality applications. With capabilities spanning UI, performance, and mobile app testing, Eggplant allows organizations to validate real user experiences using computer vision and OCR-based automation. It seamlessly integrates into CI/CD pipelines like Jenkins, Azure DevOps, and GitHub for continuous testing at every code check-in. Supporting technologies from legacy GUIs to cloud-native apps, it delivers consistent reliability across complex environments. Trusted by global enterprises and organizations such as NASA, JetBlue, and the US Army, Keysight Eggplant enables smarter testing and better software outcomes.

Cavisson NetStorm is a cost-effective, performance-enhancing and easy-to-use solution for enterprise applications. It is an extremely powerful load generator that provides an accurate estimation of Client Perceived Response Time (CPRT) enabling IT companies to guarantee the Service Level Agreements (SLA). Its advanced technology efficiently handles load variables, user realism, application realism and network realism. NetStorm is a proven solution providing root cause of the issues where legacy solutions failed, prompting Several Fortune 100 companies to switch over to using NetStorm. Massive load generation for accurate estimation of client perceived response time. Handle load variables, user, application, and network realism. As the web matures, two opposite trends are converging Web business providers want to increase the bottom line while Web users are becoming less forgiving. By using NetStorm, companies can spend their IT budget more intelligently.