GenMyModel - Industry Standards Compliance. Finally a tool which respects 100% of the UML 2. 5 standards to model your software, and BPMN 2 standards for your business process.
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.
Diagram Ring - Diagram Ring is an all in one universal level of diagram editor for DFDs, pie charts, bar charts, flow charts, class diagrams and much more.
draw.io - Online diagramming application
Grapholite - Powerful Windows 10, iPad, Android and Desktop solution for the creation of flowcharts, org charts, floor plans, uml diagrams, bpmn diagrams, mind maps, venn charts, web site structures and wireframes, network layouts etc.
Visio - Simplify and communicate complex information using data-linked diagrams.