Visual Paradigm for UML (Modeler Edition) for Windows 

Visual Paradigm for UML is an easy-to-use UML CASE tool supporting all UML diagrams - class diagram, use case diagram, sequence diagram, communication diagram, state diagram, activity diagram, component diagram, deployment diagram, object, package.
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Visual Paradigm for UML (Community Edition) for Mac OS X 

Visual Paradigm for UML is a full life-cycle UML CASE tool that supports the latest UML notation (class diagram, use case diagram, sequence diagram, communication diagram, statechart diagram, activity diagram, component diagram, deployment diagram).
visual paradigm uml modeler uml 2.0 uml tool modeling tool uml diagram case tool class diagram use case rational rose object oriented oo

Visual Paradigm for UML (Professional Edition) for Linux 

Visual Paradigm for UML is an easy-to-use UML modeling tool that supports the latest UML notation (class diagram, use case diagram, sequence diagram, communication diagram, statechart diagram, activity diagram, component diagram, deployment diagram).
visual paradigm uml modeler uml 2.0 uml tool modeling tool uml diagram case tool class diagram use case rational rose object oriented oo

ExoSee 

peers communication system for private File sharing
private file sharing

Bill Serial Port Monitor 

To monitor (bi-directional) Serial communication RS-232 between two devices without physical cable, you can use the freeware Bill Serial Monitor. This freeware enable you to view, log, test and analyse the activity of the serial RS-232 port.
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3D Alien Plasma Tunnels ScreenSaver 

For a long time Aliens have been trying to communicate with the human with no success. Then they found a talented Earth programmer and he put the communication interface into the screensaver. Try to establish an intelligent contact with the Aliens!
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