Free AI tools for design patterns

A mock .NET interview with an AI interviewer that asks follow-ups, pushes back, and scores you like a real senior engineer. Join the waitlist for early-bird pricing.

Answer a few questions and get a production-ready .editorconfig + Directory.Build.props for your .NET solution — analyzers, naming rules, and warnings-as-errors included.

Describe the problem you're stuck on and get the right C#/.NET pattern in seconds — with a tutorial for each recommendation.

Strategy vs Factory? Decorator vs Proxy? Get a clear, .NET-specific verdict on which to use when — and the mix-up to avoid.

Generate realistic interview questions and answers for any pattern, at junior, mid, or senior level. Great prep before a round.

Edit and run real design-pattern code in your browser — powered by .NET WebAssembly. Try Builder, Result, State, Strategy and more, live. No install, no server.

An AI tutor that answers strictly from Design Patterns That Deliver — production-grade and cited by chapter. Unlocks with your purchase.