Based on our record, blockdiag seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I am trying to find an extension which will allow for markdown cells to have "markdown style" graph code (like mermaid, GraphViz or blockdiag) to be placed into them and then converted to an actual graph when the code is executed. I have been searching and have only found jupyter connections for python code, an outdated mermaid extension for jupyterhub and a nonfunctional GraphViz extension for jupyterlab. Are... Source: about 3 years ago
StarUML - StarUML
UMLGraph - UMLGraph is a professional automated drawing tool that allows the designers the declarative specification and drawing of UML class and sequence diagram.
draw.io - Online diagramming application
yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.
UMLet - UMLet - Free UML Tool for Fast UML Diagrams
Dia - Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.