All testing tools
193 tools across 17 categories. Filter by what you actually need — your language, your budget shape, whether it has to run on your own infrastructure.
37 tools
Apache JMeter
Load & Performance
The open-source workhorse: every protocol, a GUI, and twenty-five years of plugins.
Cypress
E2E & UI Testing
Developer-first browser testing with an interactive runner developers actually enjoy.
Grafana k6
Load & Performance
Developer-first load testing: JavaScript scripts, Go engine, CI-native thresholds.
LocalStack
Test Data & Mocks
A local AWS cloud emulator so you can test infrastructure without an AWS bill.
Playwright
E2E & UI Testing
Microsoft's cross-browser automation library with tracing and auto-waiting built in.
Postman
API Testing
The API platform most developers already have open: requests, collections, tests, mocks.
pytest
Unit & Component
The de facto Python testing framework: fixtures, parametrisation, plugins.
Testcontainers
Test Data & Mocks
Real databases and services in throwaway Docker containers, per test run.
WireMock
Test Data & Mocks
The standard HTTP mock server for JVM and beyond: record, replay, stub, simulate faults.
Artillery
Load & Performance
YAML or JavaScript load tests that run serverless on AWS at large scale.
BlazeMeter
Load & Performance
Managed cloud execution for JMeter, Gatling, k6 and Selenium scripts.
Bruno
API Testing
Git-native API client that stores collections as plain files in your repo.
Checkly
Monitoring
Monitoring as code: your Playwright scripts, running against production on a schedule.
Gatling
Load & Performance
High-performance load testing with a code-first DSL and superb HTML reports.
Insomnia
API Testing
Clean, fast API client with strong GraphQL and gRPC support.
Karate
API Testing
API testing, mocks, performance and UI automation in one Gherkin-based DSL.
Katalon Studio
E2E & UI Testing
All-in-one low-code platform covering web, API, mobile and desktop.
Locust
Load & Performance
Write load tests as plain Python. Scale by adding workers.
Mockoon
Test Data & Mocks
Spin up a realistic mock API from a desktop app in under a minute.
Pact
API Testing
Consumer-driven contract testing so services can deploy independently.
REST Assured
API Testing
Fluent Java DSL for testing REST services inside your existing JVM test suite.
Robot Framework
E2E & UI Testing
Keyword-driven acceptance testing that reads like structured English.
SoapUI / ReadyAPI
API Testing
The long-standing tool for SOAP, JMS and enterprise protocol testing.
SuperTest
API Testing
In-process HTTP assertions for Node.js apps, without binding a port.
Tricentis Tosca
E2E & UI Testing
Model-based enterprise test automation for SAP, mainframe and packaged applications.
Apidog
API Testing
Design, mock, test and document APIs in one integrated workspace.
Hoppscotch
API Testing
Lightweight browser-based API client you can self-host in a container.
mabl
E2E & UI Testing
Low-code, AI-assisted test automation with self-healing locators.
Mockaroo
Test Data & Mocks
Design a realistic dataset in the browser and export it as CSV, JSON or SQL.
Prism
Test Data & Mocks
Turn an OpenAPI document into a mock server that validates as well as responds.
Schemathesis
API Testing
Property-based fuzzing that generates API tests straight from your OpenAPI schema.
Testsigma
E2E & UI Testing
Write tests in plain English, run them on web, mobile and APIs.
Hoverfly
Test Data & Mocks
Lightweight service virtualisation: capture real traffic, then simulate it.
Leapwork
E2E & UI Testing
Visual flowchart automation designed for business users, not engineers.
Specmatic
API Testing
Turn OpenAPI and AsyncAPI specs into executable contracts and smart mocks.
Step CI
API Testing
Open-source API testing configured entirely in YAML, built for pipelines.
Virtuoso QA
E2E & UI Testing
Natural-language authoring with self-healing, aimed at enterprise QA teams.