Markdown WYSIWYG Editor. GFM Standard + Chart & UML Extensible
E-XD++ UML Control for C/C++, C# and .NET, it can be used within Delph
an Open Source BPMN 2.0 / DMN 1.1 Modeler
Syntax tree editor for rapid annotation of existing text
An editor for the specification of Graphol ontologies
CAM XML Editor for XML+JSON+Hibernate+SQL Open-XDX sponsored by Oracle
A modern note taking app based on GIT
PUed - PlantUML Editor
A free cross-platform editor for the DRAKON visual language.
Combinatorial Interaction Testing Laboratory
UML diagram editor
The markup language for design the programs
An editor for the specification of Graphol ontologies
Utility for software systems specifications
A PlantUML editor written in Qt4
Plugin for MagicDraw to support MBSE with SysML
A Rodin Platform Plug-in for Generic Instantiation
An elegant Ubuntu based Linux distribution for all programmers.
A graphical editor for PlantUML diagrams.