Over the wire test doubles
Software Testing Tools & Resources
Largest collection of Resources and Tools for Software Testing Community

MountebankFree

AppiumFree
Mobile application automation framework

TestNGFree
Java based testing framework

jUnitFree
#Unit Testing

SpecflowFree

BehaveFree

CucumberFree

Applitools EyesFree version
Visual comparisons between different snapshots of a website or mobile app.

Robot FrameworkFree
Test Automation & RPA