Top Alternatives to Enterprise Architect

Creately is a collaborative diagramming and design software used by teams around the world to communicate more effectively.

Axure RP is a wireframing, rapid prototyping, documentation and specification software tool aimed at web and desktop applications.

StarUML is an opensource UML tool.

Edraw Max is comprehensive mind mapping and planning tool network diagrams, floor plans, workflow diagrams, business charts, and engineering diagrams.

Visual Paradigm (VP-UML) is a UML CASE Tool.

Software Ideas Modeler is a CASE and an UML tool.

Fluid UI is a browser-based wireframing and prototyping tool developed by Fluid Software and used to design mobile touch interfaces.

Diagram Designer is a vector graphics editor that allows you to create UML class diagrams, illustrations, flowcharts and slide shows.

Diagramo is an online flowchart software. It's FREE and Open Source ( GPL ) It's pure HTML5 Share and collaborate.

ProcessMaker is an Open source web-based workflow software and Business Process Management software.

Astah Community is a free software design tool which supports the latest UML diagrams.

Modelio is an Open Source UML tool.

WhiteStarUML is a UML modeling tool.