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Live online language classes arranged by learning level.

Indian competitive-exam preparation with test series, previous papers, quizzes and classes.

Official GRE practice tests, vocabulary resources, maths review and test-maker guidance.

US state-specific permit-test practice for car, motorcycle and commercial driving routes.

The American Museum of Natural History's science website for children, with reading, games and hands-on activities.

Indian entrance and professional exam preparation with courses, test series and study resources.

AI lip-sync platform for translating, creating, correcting, and testing video dialogue

Learn Ruby by correcting ordered test-based exercises

State-specific US permit-test preparation with practice questions and narrated video lessons.

Inspect the TLS configuration of a public web server

Historical features, reviews and current magazine issues

Automated unit test generation for GitHub repositories.

AI study help that explains homework steps for students and parents

AI QA engineer that tests web, iOS, and Android apps end to end.

Self-serve email API for AI agents.

Netflix's browser speed test with loaded-latency details

Probe loss and jitter through browser WebRTC

Learn and test text patterns with live feedback

AI coding agent for writing, testing, and shipping code in your IDE.

Open-source MCP server and client libraries for AI-assisted web and mobile testing.

AI-generated Playwright and API tests that run and heal automatically

Inspect how a browser uses DNS resolvers

History of innovation and industrial change

Statistical power and effect-size calculation