Open Source Java Diagram Software for Linux

PlantUml allows to quickly create some UML diagram using a simple textual description language.

Zipkin is a distributed tracing system. It helps gather timing data needed to troubleshoot latency problems in service architectures. Features include both the collection and lookup of this data. If you have a trace ID in a log file, you can jump directly to it. Otherwise, you can query based on attributes such as service, operation name, tags and duration. Some interesting data will be summarized for you, such as the percentage of time spent in a service, and whether or not operations failed. The Zipkin UI also presents a Dependency diagram showing how many traced requests went through each application. This can be helpful for identifying aggregate behavior including error paths or calls to deprecated services. Applications need to be “instrumented” to report trace data to Zipkin.

Yaoqiang BPMN Editor is a graphical editor for business process diagrams, compliant with OMG specifications (BPMN 2.0 / DMN 1.1).

Green, an Eclipse plugin, is an advanced yet simple UML class-diagram tool, developed primarily for student use. It does live round-tripping, so it's easy to move between diagram and code views. It's extensible: users can define their own relations

Jaxdiag is a small XML Diagramming tool written in Java. Jaxdiag will display, and if selected print, a heirarchical diagram of XML elements based on a selected XML file. The diagram can be expanded and collapsed as required.

Round Trip Engineering UML Class diagram tool. No longer being maintained.

jUML is a UML diagram application capable of reverse engineering Java source code to create relationship diagrams, source code generation based on a user created UML diagram, and saving/restoring of jUML projects.

Mada Framework is UML design tool . create class diagram and draw classes, relations and generate java code and sql script present the UML run using the command [java -cp fw.jar com.mada.designer.UMLEditor]