Best performance-testing tools

Write API, UI, performance, and mock tests in readable feature files using one test framework.

Audit individual web pages and turn failed checks into concrete optimization leads.

Drive a chosen rate of HTTP requests and turn response samples into load-test reports.

Plan and run scripted performance tests with RadView's WebLOAD dashboard and cloud or self-managed load generators.

Model performance scenarios for applications and APIs, generate virtual-user load and analyze run results.

Write load-test scenarios as code and control the request rate sent to an application.

A Java-based load-testing application for exercising services and analyzing their performance under simulated traffic.

A Python load-testing framework that models user behavior in code and scales traffic across workers.

Write JavaScript load tests and run them locally or send performance tests to Grafana Cloud.

Record and run realistic web and API load tests in real browsers, then review user-facing timings.

Find production performance bottlenecks in PHP and Python applications, then inspect the responsible code paths.

Build functional, security and performance tests for APIs, then automate the runs in CI.

Apple's framework for unit, performance, and UI tests in Xcode projects.

Run cloud performance tests for web applications and APIs from scripts you supply.

Create functional API tests from specifications or recorded traffic, then extend them into security and performance checks.

Measure browser page-load and interaction performance with repeatable local or containerized runs.

Load test websites, applications, and APIs with scripted browser or protocol bots, then inspect performance reports.

An end-to-end testing platform spanning web, mobile, performance, and real-device workflows.