AnyLogic - AnyLogic has changed simulation modeling and expanded its application into complex business environments. The unmatched flexibility of multimethod modeling allows users to capture the complexity of virtually any system, at any level of detail.
Modelio - Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI.
FlexSim - Simulation software to model, simulate, predict, and visualize systems in manufacturing, material handling, healthcare, warehousing, mining, etc.
Diagramo - Diagramo is an online flowchart software - diagrams (create, edit and share)
Simio - Facility design simulation & production scheduling
UML Designer - UML Designer provides a set of common diagrams to work with UML 2.5 models.