Xfig is a diagramming tool
Free software for making Flow chart, Mind map, Gantt chart, Whiteboard
ChartDB Desktop Version
show and edit eulumdat files
Visualize the diagrams of your projects
Webbased modeling tool
The Pencil Project's unique mission is to build a free tool
Database ERD- design tool with Reverse Engineering
Write, check, index and diagram Z specifications in Microsoft Word.
Your graphical tool for Syntactic/Semantic Structure Analysis of texts
Collection of nice looking Calligra Flow computer and network stencils
Print guitar chord diagrams
Steganography and steganalysis software