free, cheap or open source UML and Visio-like tool [closed]

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We're looking for free/cheap or open source UML tools. Wha开发者_StackOverflowt tools have you used ? It's OK if there are 2 tools, one each for Flow charts and UML.

If a UML tool or Flow Chart tool is cheap(we're a NON-PROFIT), and no open source is good enough, we're open to look at them.

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It's online, but I think yUML is the best free tool I've used. I've used Violet for University work but found it clunky and crash-prone.

yUml only supports class diagrams, activity diagrams and use case diagrams though. Here's an example of its output:

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StarUML is also a nice one

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I use UMLet

Free, AND open source.

Why i like it : all the diagram have a "sourcecode", for exemple a class is "coded" like that.

<<Stereotype>>
Package::FatClass
{Some Properties}
--
-id: Long
-ClassAttribute: Long_
--
#Operation(i: int): int
/+AbstractOperation()/
--
Responsibilities
-- Resp1
-- Resp2

It's handy, and avoid heachache with graphical editor.

Edit : Thanks eric for the precision

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There is for example DIA. Also, Visual Paradigm is a commercial UML editor that has a free community edition.

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Simple and easy to use: JudeUML. There is a free Community Edition.

This software is now released as astah community.

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Have a look at Dia

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VioletUML for UML diagrams.

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To create flowcharts online, I use gliffy

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Topcased is integrated to Eclipse and is able to generate code.

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ArgoUML could also be an option or, maybe even better, one of the free modeling tools available for the Eclipse enviroment. See: http://modeling-languages.com/content/uml-tools for pointers to Eclipse and fre/open-source tools

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For BPMN/Workflow I m using Bizagi Process Modeler.

For UML i m using Enterprise architect but it is not free but the priceis ok if you look what you get. Poseidon UML is ok but suffers when you have a lot of diagrams.

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I've used BOUML before. It is useful for generating Java code from UML class diagrams, if you're into that sort of thing.

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For sketching up sequence diagrams this site is excellent: http://websequencediagrams.com/

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I have tried a few, but hands down winner for me is Topcased. You can get it at www.topcased.org.

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Additional web tools for this task are draw.io, Cacoo and Creately.