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What program would you recommend for UML diagrams? I use Microsoft Visio but it does not have support for all the types of diagrams I wish to use.

I'm looking for a program which supports the following UML diagrams:
- Use Case diagrams.
- Class diagrams.
- State Char diagrams.
- Activity diagrams.
- Sequence diagrams.
- Collaboration diagrams.

You didn't say whether you were looking for something free so here's my suggestion: Sparx Enterprise Architect. It sucks much less than Visio. We use the Windows version at work... there's a Linux version, but it depends on a bunch of ports of Windows stuff (MDAC & the MS Access JET DB engine), so the Linux version might be hacky.

I have used Umbrella but can't vouch for its usability.

binutils wrote:http://www.gentleware.com/

I used to use Poseidon UML, but it was painfully slow on my old machine (800 MHz Athlon w/ 768 MB RAM), and they turned it into rentware (the Community Edition used to be free)! It basically took my files hostage, not letting me save changes to them unless I agreed to pay a monthly fee. So, I told them to stick it and I bought a license for Enterprise Architect instead (for about $200 CDN). My company has a generous policy for "educational purchases", so in the end it actually cost me nothing.

The moral of the story is -- gentleware BAD! (IMO, anyway)

Colonel Kernel wrote:

binutils wrote:http://www.gentleware.com/

I used to use Poseidon UML, but it was painfully slow on my old machine (800 MHz Athlon w/ 768 MB RAM), and they turned it into rentware (the Community Edition used to be free)!

The moral of the story is -- gentleware BAD! (IMO, anyway)

Talk about vendor lock-in. You should've seen THAT coming.

Fortunately they gave a few months' warning, so I was able to export everything to an XMI file before they turned off that functionality. I imported the XMI file into EA and spent some time fixing up the diagrams (about a week). It was a pain, but at least now everything is working fine.

When will software companies realize how damaging these tactics are to their reputation?

Colonel Kernel wrote:When will software companies realize how damaging these tactics are to their reputation?

When will users learn not to fall for vendor lock-in schemes?

I ditched their product without paying a dime. Does that qualify as "falling for it"?

In my experience, companies that engage in such tactics are already desperate for revenue, but they're just hastening their own demise.

Doesn't Microsoft follow those same tactics? they invent their own standards practically daily..

That's vendor lock-in as well...

As Candy so nicely put it..

Candy wrote:When will users learn not to fall for vendor lock-in schemes?

What program would you recommend for UML diagrams?

Visual Paradigm is great.It's Java based.There is a free comunity edition.