我强烈推荐BOUML。它是一个免费的UML建模应用程序，它:

is extremely fast (fastest UML tool ever created, check out benchmarks), has rock solid C++, Java, PHP and others import support, is multiplatform (Linux, Windows, other OSes), has a great SVG export support, which is important, because viewing large graphs in vector format, which scales fast in e.g. Firefox, is very convenient (you can quickly switch between "birds eye" view and class detail view), is full featured, impressively intensively developed (look at development history, it's hard to believe that such fast progress is possible). supports plugins, has modular architecture (this allows user contributions, looks like BOUML community is forming up)

相信我，没有更好的工具了。与BOUML相比，StarUML是一个弱智的海龟。ArgoUML根本不起作用。Dia是一个人机工程学^-1软件。

你可能正在寻找一个自动工具，它会自动为你生成很多东西。但是这里有一个免费的、功能强大的图表绘制工具，它不仅对UML有用，而且对各种图表绘制任务都有用。它接受各种常用文件格式作为输入和输出。它叫yEd，值得一看

一些背景:最近在研究生院，我为一个独立的项目研究了UML工具的可用性和UML理解。我还以当模特/建筑师为生。

之前的帖子有太多的答案而没有足够的问题。一个常见的误解是UML是关于创建图的。当然，图表很重要，但实际上您是在创建模型。以下是每个供应商的产品/解决方案在某些方面优于其他产品时应该回答的问题。注:列出的答案是我认为最好的，即使其他产品支持特定的功能或需求。

Are you modeling or drawing? (Drawing - ArgoUML, free implementations, and Visio) Will you be modeling in the future? (For basic modeling - Community editions of pay products) Do you want to formalize your modeling through profiles or meta-models? OCL? (Sparx, RSM, Visual Paradigm) Are you concerned about model portability, XMI support? (GenMyModel, Sparx, Visual Paradigm, Altova) Do you have an existing set of documents that you need to work with? (Depends on the documents) Would you want to generate code stubs or full functioning code?(GenMyModel, Visual Paradigm, Sparx, Altova) Do you need more mature processes such as use case management, pattern creation, asset creation, RUP integration, etc? (RSA/RSM/IBM Rational Products)

Detailed Examples: IBM Rational Software Architect did not implement UML 2.0 all the way when it comes to realizes type relationships when creating a UML profile, but Visual Paradigm and Sparx got it right. Ok, that was way too detailed, so a simpler example would be ArgoUML, which has no code generation features and focuses on drawing more than the modeling aspect of UML. Sparx and Visual Paradigm do UML really well and generate code well, however, hooking into project lifecycles and other process is where RSM/RSA is strong. Watch out for closed or product specific code generation processes or frameworks as you could end up stuck with that product.

这是一个直接的大脑转储，所以一些细节可能并不完美，但是，这应该提供了一个关于问题和解决方案的大致地图。

新-发现了一个很好的列表，许多UML工具的描述。Wiki UML工具列表

我尝试过MagicDraw，它非常好，虽然只有社区版。

我也尝试过omondo，它看起来很棒，但用于商业用途非常昂贵。

Astah UML(前jude)非常好。

我将添加UMLet，我还没有尝试过，但已经在我的办公室选择开始做图表。 看起来很简单，图表并不性感，但就您可以绘制的图表类型而言，它似乎相当完整。似乎有很好的导出能力太(重要!)，是灵活的可以支持自定义组件)，可以作为Eclipse插件使用。