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Study smarter for IELTS, TOEIC and HSK with AI speaking and writing rooms

AI-coached CASPer practice questions and full mock tests

AI-powered diagnostic practice tests for SAT®, ACT®, PSAT/NMSQT® and AP® — scored in about 40 minutes

AI-adaptive LSAT drilling for Logical Reasoning and Reading Comprehension

PTE practice tests with instant AI scoring and realistic mock exams

Practise PTE Academic and PTE Core free, with AI scoring for speaking and writing

Expert-reviewed digital SAT prep with adaptive tests and a curated question bank

Ace the Duolingo English Test with AI scoring and 18,000+ practice questions

Ship with confidence: one system of record for manual, automated, and CI tests

Learn to code free with hands-on lessons and instant playgrounds

Write end-to-end test automation in plain English, no code required

AI-graded TOEFL practice tests with instant scores and feedback

Open-source, human-readable UI testing for mobile and web

End-to-end certification platform built by psychometricians

Enterprise online exam platform with professional psychometrics

Turn any document, video or topic into a finished quiz in seconds

GenAI-native end-to-end QA agent that plans, writes and heals tests in plain language

AI language and skills assessments for hiring and education

A conversational AI fluency assessment with a free LinkedIn certificate

AI-powered practice and scoring for the Duolingo English Test

Describe it in plain English, Drizz tests it on real devices

Ship live apps straight from your AI chat

All-in-one AppSec platform that finds and auto-fixes vulnerabilities

AI-powered test management that keeps QA teams fast and organized