PlanoHero - PlanoHero - is a cloud service for automating planogramming processes, analyzing store plans and planograms.
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Visustin - Visustin is a flowchart generator to make you able to visualize your source code UML activity diagrams and flowcharts.
draw.io - Online diagramming application
EazyStock - Smart demand forecasting and inventory optimisation software
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.