Creately - The new interface for work to ideate, plan, and execute
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.
textografo - Online diagramming application which generate diagrams based on text and allows real time...
Cacoo - A cloud-based diagram maker for companies, teams, and you.
draw.io - Online diagramming application
SmartDraw - Instead of starting with a blank screen, SmartDraw gives you the exact template you need.