Free QA & API Testing Tools
Five focused tools real QA and test-automation engineers reach for daily — free, no login, no data leaving your browser unless a tool explicitly says otherwise.
Build and debug regular expressions with live match highlighting, capture groups, and a find-and-replace preview.
Open toolSend a request, inspect the response, and import/export as cURL — a lightweight REST client with no install.
Paste HTML, test an XPath or CSS selector against it, and see exactly what it matches — built for Selenium/Playwright locators.
Compare two JSON payloads structurally — not just as text — to catch real API regressions between builds.
Describe a feature in plain English and get 5–10 test cases — happy path, edge cases, and negative cases included.
These are the free previews. The real thing runs your whole test suite.
ContextQA generates, runs, and self-heals your tests automatically — across web, API, mobile, and AI agents.
See ContextQA in action