Apps similar to PlantUML include draw.io, which is free and open source. Other options are Excalidraw, yEd Graph Editor, Dia and Freeplane. You're spoiled for choice with Diagram Editors like PlantUML: we list more than 100 alternatives for Windows, the web, Mac, Linux and self-hosting.
ExcalidrawZ is a native Excalidraw client for Mac, iPad, and iPhone, designed for hand-drawn whiteboards, diagrams, sketches, visual notes, and technical explanations.
China
Transitrix Studio supports Architecture-as-Code by keeping enterprise models in structured YAML, and Diagram-as-Code by rendering diagrams from that source. This Diagram-as-Text workflow covers goals, business processes and capabilities, with sources that can be versioned in Git...
I got tired of opening Lucidchart or draw.io every time I needed a quick sequence diagram — fighting with boxes and arrows for something that should take two minutes. SeqDiagram is the alternative: you just write the flow as text, and the diagram appears on the right as you type.
Diagram-Generator is an AI-powered platform that transforms your ideas into professional diagrams and infographics. Simply describe what you want, and our AI creates it in seconds. We offer two modes: Draft Mode (free, unlimited, editable Mermaid diagrams) and Pro Vision...
Sketch, walk through, and share system design flows. Drag components, connect them, and present each interaction step by step — no account needed to try.
India
