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
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
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.
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
Generic textile / knot diagram / thread topology editor
An Eclipse plug-in for the IBM FileNet P8 Content Engine and CMIS
Business graphics diagramming application + customizable shape lib.