我还没有找到一个顶级的免费UML图表工具，但是如果您对纯粹的图表感兴趣，而不是往返工程，我会选择Microsoft Visio。如果您想要完全的双向工程，Rational Rose。

维基百科上列出的UML工具可能也会派上用场。

我是Sparx Systems的企业架构师。一个非常全面的UML工具，价格非常合理。

非常强大的特性列表包括:集成项目管理，基线，导出/导入(包括导出到html)，从模型生成文档，各种模板(Zachman, TOGAF等)，IDE插件，代码生成(IDE插件可用于Visual Studio, Eclipse等)，自动化API -列表还在继续。

哦，是的，不要忘记直接从工具内部(SVN、CVS、TFS和SCC)支持源代码控制。

我也会远离Visio——你只能得到图表，而不是模型。在UML建模工具的一个地方重命名一个类，然后在所有地方重命名。但在Visio中却不是这样!

In my career I often needed to draw UML diagrams and generate Java code. I found MagicDraw most appealing and I'm a happy user. I think their licensing model is fair because it allows to pay for what you need. I prefer it to other products I used in my (distant) past: ArgoUML, Poseidon, Rational Rose, Dia. Be aware that my experiences on other products are obsolete and have maybe significantly improved or changed their licensing model. Maybe you should start with an open-source tool and decide later whether to spend some bucks.

使用MagicDraw，您可以通过从代码生成图表来记录您的代码。您也可以先建模，然后生成代码。它还可以很好地与多个ide集成。

尝试alt文本http://www.sparxsystems.com.au/images/products/logos/EA.png

但是，它不是免费的

它有惊人的功能。点击这里查看截图。

他们有alt文本http://www.sparxsystems.com.au/images/products/logos/MDGIntVS-268x73.png和alt文本http://www.sparxsystems.com.au/images/products/logos/MDGIntEclipse-223x73.pngtooo..

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

为了我的简单和简短的UML工作， 我用过这个工具:

星联 - http://staruml.sourceforge.net/en/

很棒的免费UML绘图软件。

虽然最初的Star UML不再维护，但是现在有一个叫做White Star UML的分支正在积极开发。