Apps with 'UML' feature Page 3 of 3

Software and hardware systems contain faults. One important technique to detect faults is testing. With the spread of model-based development, models became also important for testing. In model-based testing, test models are used to generate test suites (semi-)automatically.

UModel is a UML (Unified Modeling Language) software modeling tool from Altova, the creator of XMLSpy. UModel supports all 14 UML 2 diagram types and adds a unique diagram for modeling XML Schemas in UML.

Online flowchart maker: Sankey Flow Show is a modern online web application running in your browser. It focuses on high graphical quality and user efficiency. Highlights: Revision history, live collaboration, customizable data forms...

Free sequence diagram online generator. The tool allows you to create sequence diagram online easily and quickly, using simple text.

Inwardis keeps what you know about a system as a hierarchical model rather than separate diagrams. Every element can contain sub-elements, so a person or an AI agent opens one level, sees what matters there and drills into a single branch.

Software architecture diagramming tool.

All-in-one modeling tool for UML, ERD, DFD and flowcharts, with built-in AI features (AI Chat Copilot, AI Code Reverse and an MCP server).

Flowdia is an easy to use flow diagram tool that can be used to quickly create professional quality Flow Charts, BPMN 2.0 diagrams, Network Layouts, UML Activity and Class diagrams.

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.

AI Architecture Engineering Platform. Describe your system in plain English and get architecture diagrams you can review, secure, estimate and document.

DoodleBoard is an online whiteboard application, with build doodle style rendering effect and many hand-craft doodle shapes. It can be used for your visual thinking, note-taking and presentations.

A simple way of describing graphs and include it easily in your web for free, blog, markdown page, github, and any location where remote images can be showed.

SketchAlchemy turns handwritten sketches, whiteboard photos and tablet drawings into fully editable and searchable diagrams for Excalidraw and Obsidian.

Diagramiq is an online app for creating Flowcharts, UML, BPMN, Network Diagrams, Decision Trees and more. It's blazing fast, intuitive and it has a wide-range of predefined shapes to get you started.