Software architecture diagramming tool. Includes a modern easy to use Frontend + Backend + CLI to enable managing diagrams from the shell or in CI.

drawNET: Engineering-Grade Network Architecture Design Tool. High-precision diagramming with Multi-Layering, Smart Grouping, and Professional Exports (PPTX/PDF).

Free, open-source visual tool for designing system architectures. Drag-and-drop services, databases, queues & more. 9 templates, dark mode, PNG/SVG/Mermaid export. 100% client-side.

A bidirectional visual editor for TODO Requirement Blueprints. Render YAML into interactive graphs, mutate architecture visually, and sync back to code.

Local-first architecture diagram builder with LLM-friendly import

A lightweight, privacy-focused client-side application for creating, rendering, and exporting Mermaid diagrams directly in your browser. No server required, no data collection, complete privacy.

Schema Editor is a free mobile-first, touch-optimized vector design web application for designing, viewing, analyzing, and interacting with electric and circuit schematics, flowcharts, network diagrams, PCB designs, UML designs and architectural floorplans.

🧩 Create and export secure Mermaid diagrams directly in your browser with this lightweight, client-side application—your privacy remains intact.