JavaScript client-side editor for general diagramming & whiteboarding
Display dynamic, automatically organised, customizable network views
Graphical language server platform for building web-based diagram
an Open Source BPMN 2.0 / DMN 1.1 Modeler
Ladder editor and debugger
show and edit eulumdat files
An editor for the specification of Graphol ontologies
Easy Tools of PDF, Image, File, Network, Data, and Medias
Digital timing diagram rendering engine
Database administration,view,edit,migrate,entity relationship diagram
A modern note taking app based on GIT
PUed - PlantUML Editor
Eclipse Editor for the Swagger-OpenAPI Description Language
A free cross-platform editor for the DRAKON visual language.
UML diagram editor
pgf/TikZ diagram editor
An editor for the specification of Graphol ontologies
The open source embeddable online markdown editor (component)
A PlantUML editor written in Qt4
Cress is a comprehensive toolset for graphical service/workflow design
Jade is a cross-platform diagram editor built on the Qt framework.
Free drawing software for Windows, Mac OS X, and Linux
Computer vision workbench