Charles is a HTTP proxy that enables you to see traffic between your machine and the backend

Sonic is a platform that integrates remote control debugging and automated testing of mobile devices, and strives to create a better user experience for global developers and test engineers.

Unifying API testing, API Performance testing, API Mocks and UI testing.

Explore your app like a real user, operating a real web browser, handling login (with MFA), handling email interactions, all whilst operating large multi-step user journeys. Any bugs are reported along with auto-generated Playwright tests.

Built for developers and testers alike, SoapUI is the only open source tool that covers the entire testing spectrum (functional, security, load, mocking).

Simplifying testing workflows for developers and QA engineers with instant, privacy-first mock file generation.