Create visual representation of processes, organizations, and mind maps.
Diagram Ring is an open source advanced diagram editor.
Diagram Designer is a graphics editor tool to edit graphical data.
Cay S. Horstmann
Violet is a UML editor, very easy to learn and use, draws nice-looking diagrams.
Aspose.Diagram is a class library for working with Microsoft Visio files.
Prof. G. Dalgish
Versatile free application to teach and learn Kellogg-Reed sentence diagrams.
Digitron Software Ltd
Create UML Class Diagrams with automatic layout, requiring no manual positioning.
Create UML class diagrams with full C# and Java language.
Green Bird Software
A small program to draw class diagrams and generate code.
Creates activity diagrams, class and object diagrams and communication diagrams.
Yacht-AIS Transponder works with Class A, Class B and Class B CS Transponders.
Professional UML Diagrams and Software Diagrams Drawing Tools with Examples.
Polar diagrams. Polar Diagrams are used to determine the optimum course to sail.
WPF Diagrams creates interactive diagrams and model surfaces.
Create chord diagrams and then using those diagrams in other programs.
Venky's FunFactory Software
Helps the users to draw diagrams in 2-D and even some basic 3-D diagrams.