This is a PC version of the popular video game Tetris.
Play a simple game of Tetris and avoid filling the screen with bricks.
Now Poseidon for UML is based on our Poseidon for DSLs platform.
Creates activity diagrams, class and object diagrams and communication diagrams.
No Magic Inc.
Facilitates analysis and design of Object Oriented (OO) systems and databases.
A powerful yet easy-to-use UML diagram drawing program.
Creates call flows & UML sequence diagrams from textual inputs.
Adrian & Frank Buehlmann
Fast and Lightweight UML Diagram Editor for Windows 2000, XP and Vista.
Visual Paradigm International Ltd.
VP-UML Community Edition (VP-UML CE) is a free UML drawing tool.
Create visual representation of processes, organization, mind map, etc.
No Magic Inc.
Contains all of MagicDraw's powerful UML diagramming capabilities.
Diagram Designer is a graphics editor tool to edit graphical data.
Umbrello UML Modeller is a Unified Modelling Language (UML) diagram program.
UML modeling tool with UML 2.4 support and round-trip Python, ADA, Java, C/C++...
Change Vison, Inc.
It lets you draw UML, ER, Flowchart, CRUD, Data Flow Diagram.
Tool for model-driven software development with UML in C#, Visual Basic .NET, C++ and Java.
Business Process - Data - UML - Java Modeling.
Create UML class diagrams with full C# and Java language.
Designs and models UML products based on Java Enterprise language.
Nikolay G. Georgiev
Jetris is a Java based Tetris clone you can play for hours.