Visustin - Visustin is a flowchart generator to make you able to visualize your source code UML activity diagrams and flowcharts.
Modelio - Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI.
Creately - The new interface for work to ideate, plan, and execute
Diagramo - Diagramo is an online flowchart software - diagrams (create, edit and share)
EazyStock - Smart demand forecasting and inventory optimisation software
UML Designer - UML Designer provides a set of common diagrams to work with UML 2.5 models.