[NTLUG:Discuss] IM server open source?

[Stuart Johnston]

Chris Cox wrote:
> Carlos Wesbrooks wrote:
>> I had a question from my IT guy at work and I don't know the answer, maybe
>> someone on this list knows an answer.  I was asked if I knew of an open
>> source Instant Messenger Server I had no answer for him but told him I would
>> look and see.  I have been touting open source every time we talk as an
>> alternative to what he is talking about and this may be a chance to get some
>> started here at work so any advice on the this would be greatly appreciated.
> 
> We run a jabber server here... I even tied it into our AD so the Windows
> folks are happy when they login.

Which server software do you use?