The Only 5 Diagramming Tools You Need for System Design

A curated list of five diagramming tools for creating system design diagrams: Excalidraw (free, browser-based with hand-drawn aesthetic), Draw.io (feature-rich with extensive integrations), Lucidchart (enterprise collaboration tool), DiagramGPT (AI-powered text-to-diagram generation), and Diagramming AI (natural language diagram creation). The guide emphasizes Excalidraw for interview preparation due to its flexibility and minimal learning curve, while other tools serve specific use cases like professional documentation and team collaboration.