HEATKEYS

Draw, share and collaborate on online diagrams. Easy web flow chart, network diagram, mockup, wireframe, UML diagrams like Class, Sequence, & data flow and process flow diagrams. Creately - free web-based software for online diagram software

Powerful online solution for the creation of flowcharts, org charts, floor plans, uml diagrams, bpmn diagrams, mind maps, venn charts, web site structures, etc.

Altova XMLSpy XML editor, plus other leading XML, data management, UML, and Web services software tools for application, web site, and database development, data conversion, and more.

UML design and business analysis tool for modeling, documenting, reverse engineering, building and maintaining object-oriented software systems, fast and intuitive. Great features, great price.

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

Qfsm - A graphical tool for designing finite state machines

Software development tools support UML, SysML, BPMN, Business Rule, ERD and mind mapping. All Visual Paradigm tool can run on Windows, Linux and Mac OSX.

Fizzim is a Finite State Machine (FSM) Design Tool GUI that generates verilog code. Runs on all platforms.

Online diagram and flowchart software. Create diagrams and drawings such as flowcharts, mind maps, network diagrams, UML diagrams, wireframes, user interface designs and other drawings online with LucidChart.