Modelio - Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI.
Diagramo - Diagramo is an online flowchart software - diagrams (create, edit and share)
UML Designer - UML Designer provides a set of common diagrams to work with UML 2.5 models.
BOUML - BOUML : An UML toolbox running under Linux, MacOS X and Windows to specify and generate code in C++, Java, Php, Python, Idl and MySQL
IBM Rational Rose Enterprise - IBM Rational Rose Enterprise is a functional unified modeling language software based on object-orientation.
IYOPRO - The IYOPRO BPM Platform is a comprehensive online BPM Suite based on the BPMN 2.0 standard. The IYOPRO PLM Components combine innovative process management with solid PDM technology.