JavaScript client-side editor for general diagramming & whiteboarding
Display dynamic, automatically organised, customizable network views
an Open Source BPMN 2.0 / DMN 1.1 Modeler
show and edit eulumdat files
Easy Tools of PDF, Image, File, Network, Data, and Medias
Digital timing diagram rendering engine
pgf/TikZ diagram editor
The open source embeddable online markdown editor (component)
Jade is a cross-platform diagram editor built on the Qt framework.
Free drawing software for Windows, Mac OS X, and Linux
Business graphics diagramming application + customizable shape lib.
Easy Video Editor - graphical interface to non-linear video editor