13+ Open Uml Online. This will open its online uml editor. Because yuml diagrams are based on text, you can easily create them from create popular types of uml diagram.
Sequencediagram.org is an online tool / software for creating uml sequence diagrams. The symbols to draw various uml diagrams like activity, deployment, etc can be found in a toolbox that stays on the left of its interface. Generate uml diagrams in your browser directly from plantuml code.
This makes the modeling language a practical tool for developers:
13+ Open Uml Online. Compatible with uml 2.x standard metamodel and diagrams: Uml stands for unified modeling language. Check our list of online uml modeling tools (and bpmn, er.) to create and draw your diagrams in a free and open source pure html5 online flowchart software (no flash, java or other plugins. Free editor to create online diagrams.