Microsoft Office Visio is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is diagrams.net, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Microsoft Office Visio and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Microsoft Office Visio are Dia (Free, Open Source), yEd Graph Editor (Free), LibreOffice - Draw (Free, Open Source) and Pencil Project (Free, Open Source).
MagicDraw is an award-winning business process, architecture, software and system modeling tool with teamwork support. MagicDraw UML can do comprehensive UML diagramming, reverse and forward engineering for Java and C++.
Cubetto gives you the opportunity to model in modeling languages from a vast set of selections. You can choose between BPMN, Event-driven Process Chains (EPC) to Flowcharts. Even a generic modeling language for your own needs is available.
Thortspace builds a 3D space-map of your thoughts. The 3-D linkages generated by Thortspace spheres facilitated both new insights and new lines of data management, and – almost magically. Thortspace is an invaluable aid to brainstorming prediction.