nomnoml is described as 'A tool for drawing UML diagrams based on a simple syntax' and is a UML Modeling tool in the development category. There are six alternatives to nomnoml, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux and Android apps. The best nomnoml alternative is yEd Graph Editor, which is free. Other great sites and apps similar to nomnoml are PlantUML, Mermaid, Graphviz and StarUML.
yEd is a powerful diagram editor that can be used to quickly create diagrams manually or import external data for analysis and auto-magically arrange even large data sets by just pressing a button. You can use yEd to quickly create flow charts, BPMN and UML diagrams...
Germany
EU
PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams. The generator can be run anywhere within JVM and integrated with various application such as wiki, text editor, IDE, programming language, documentation generator, and others.
FranceEU
Ever wanted to simplify documentation and avoid heavy tools like Visio when explaining your code? This is why mermaid was born, a simple markdown-like script language for generating flowcharts, Gantt charts and sequence diagrams from text via JavaScript.
SwedenEU
Graphviz is open source graph visualization software. Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks. It has important applications in networking, bioinformatics, software engineering, database and web design...
United States
StarUML is a program to develop fast, flexible, extensible, featureful, and freely-available UML/MDA platform running on Win32 platform. The goal of the StarUML project is to build a software modeling tool and also platform that is a compelling replacement of commercial UML...
South Korea
United Kingdom