Invision - Prototyping and collaboration for design teams
Modelio - Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI.
Axure RP - The prototyping and specification software used by 87% of the Fortune 100. Beyond mockups, design interactive prototypes for business solutions, websites, and applications.
Diagramo - Diagramo is an online flowchart software - diagrams (create, edit and share)
UXpin - Design is really about solving problems. UXPin is the UX Design Platform that gets that right.
ARIS Express - ARIS Express is based on the proven ARIS methodology and industry standards.