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Build domain-specific languages with a projectional editor, language tools, and code generators.

Assure service-provider network performance with active tests, real-time visibility, and predictive alerts.

Learn Go through test-driven development

A PowerShell framework for unit, integration, and environment tests with mocking and CI reports.

Run repository builds, tests, and deployments from a bitbucket-pipelines.yml file in Bitbucket Cloud.

Research tools for navigation, content and prototype questions

Official SAT and PSAT preparation with full-length tests, targeted questions and study-planning guidance.

Online PTE preparation with mock tests, automated scoring, strategy videos and study planning.

English exam practice with mock tests, AI feedback, vocabulary tools and personalised study plans.

Exam preparation for real estate, appraisal and home inspection with vocabulary tools and simulated tests.

An agentic engineering tool that turns prompts into specs, designs, and tasks, then implements them with parallel agents.

AI tool that generates code, tests, docs and diagrams from plain instructions.

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

Official PTE preparation routes for Academic, Core and Home tests.

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

Check download and upload bandwidth separately

IT certification practice tests and assessments searchable by vendor, product type and role.

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

AI testing platform for unit, integration and API tests

A GMAT study community with question banks, practice tests, an error log and study-planning tools.

Official LNAT preparation guidance, practice tests and sample essays.

Find ping tests for common online games

AI language tutor for speaking practice

Employment assessment preparation covering aptitude tests, interviews and assessment-centre exercises.