Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

Master programming by recreating your favorite technologies from scratch.

Hurl, run and test HTTP requests with plain text.

ASP.NET Core is a cross-platform .NET framework for building modern cloud-based web applications on Windows, Mac, or Linux.

Interactive roadmaps, guides and other educational content to help developers grow in their careers.