LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Diagrams for Mac - A diagram editor for visualizing structures and processes
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.
AutoCloud - Loan origination & document management for lending companies
textografo - Online diagramming application which generate diagrams based on text and allows real time...
Plectica - Easily diagram anything, together