PrepGrind
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Learn system design, DSA & AI by building, not memorizing
Artificial Intelligence
Developer Tools
Education
PrepGrind is a interactive playground to learn system design and data structures, algorithms (DSA) & AI. Build architecture diagrams on a drag-and-drop canvas, run live traffic simulations, study 33 real system design case studies (URL shortener, Instagram, chat, video streaming, payments), and master DSA patterns with step-by-step algorithm visualizations and interview guides.
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