Atomic - The fastest way to design beautiful interactions
UML Designer - UML Designer provides a set of common diagrams to work with UML 2.5 models.
Dotgrid - A simple vector illustration tool.
Diagramo - Diagramo is an online flowchart software - diagrams (create, edit and share)
Invision - Prototyping and collaboration for design teams
ARIS Express - ARIS Express is based on the proven ARIS methodology and industry standards.