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GoodTool Diagram – Online AI-Powered Diagramming Tool with Smart Auto-Layout for Flowcharts, ER Diagrams, Module Diagrams, and Use Cases. Create Instantly via AI or Manual Input—Export to Draw.io, PNG, or SVG. | AI-generated professional architectural floor plans. Supports ISO 128 and GB/T 50104 standards, intelligent spatial planning, project-based management, one-click download. Free trial for architects and designers. |
flowchart, use case, er diagram, module diagram | Design Tools |
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It is a whiteboard tool that lets you easily sketch diagrams with a hand-drawn feel.

It is a software design tool tailored for agile software projects. It supports UML, BPMN, ERD, DFD, SysML. It also supports use cases, wireframeing, code engineering, etc.

Create flowcharts, diagrams, org charts, floor plans, engineering designs, and more, using modern shapes and templates with the familiar Office experience.

Create interactive user flows and stunning design presentations to engage your audience in synchronous or asynchronous design critique.

Make flowcharts, network diagrams, uml diagrams, org charts, mind maps, wireframes, and more.

It is a collection of tooling to create software architecture diagrams and documentation based upon the C4 model.

Creators of Mac, iPad, and iPhone productivity software. Proud to bring you OmniFocus, OmniOutliner, OmniGraffle, and OmniPlan.

Design databases using natural language. AI-powered schema generation transforms your plain English descriptions into production-ready SQL, Prisma schemas, and ER diagrams in seconds. Free to start.

An AI-powered software tool that helps developers plan features effortlessly. Generate detailed technical designs, documentation, and architectural blueprints instantly. Tailored to your prompts and codebase.

Diagram AI that turns plain English into flowcharts, tree diagrams, probability trees, ERDs and more. ChatFlowchart is an AI diagram generator and AI flowchart maker that lets you chat to generate, edit, and export diagrams. Create diagrams online, free to try, no signup.