Teamflow - Feel like a team again with your own virtual office
UMLGraph - UMLGraph is a professional automated drawing tool that allows the designers the declarative specification and drawing of UML class and sequence diagram.
Pesto App - The digitally native, authentically human workplace.
yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.
Remotion - Motion capture and replay platform for mobile devices
draw.io - Online diagramming application