Open source
Sinon.JS
Spies, stubs and mocks for JavaScript tests in any framework
API and MockingSpies and stubs for JS
Alternatives to Mockito
12 tools like Mockito, chosen by what they do. About Mockito
Open source
MockK
Mocking library built for Kotlin with coroutine support
API and MockingMocking library for Kotlin
Freemium
Mockaroo
Generate realistic test data as CSV, JSON, SQL or Excel
API and MockingRealistic test data generator
Open source
Newman
Command line runner for Postman collections in CI
API and MockingPostman collections on the CLI
Open source
Freemium
Open source
TestNG
Java test framework with groups, data providers and parallel runs
Test FrameworksJava test framework
Open source
JUnit
Programmer-friendly testing framework for Java and the JVM
Test FrameworksJava testing framework
Open source
Open source
Jest
JavaScript testing framework that runs with little or no setup
Unit TestingJavaScript test framework
Open source
Open source
PIT
Mutation testing system for Java that checks test quality
Quality and ReportingMutation testing for Java