prodigy_ said: "Internet" is the key word here. Converting to PDF is a one-way road and people generally want to be able to edit documents they receive from their business partners. I guess you've never worked in IT and never had to explain to a user that no, they can't really edit PDF. And no, they can't convert it back to DOC/whatever without losing most of formatting unless the company is willing to purchase software specifically for the task. And no, Adobe Acrobat won't do. And... well, you get the picture, I believe.
It's a very, very good thing most people don't even try to bother with PDF.
As mentioned earlier, I don't *want* my clients to edit the documents I provide to them.
That being said, it is quite possible to create an editable pdf, if you're into that kind of thing. In fact, I've attached one to this post, so you can try it out yourself. The fact that you may not know how to do it doesn't mean that it can't be easily done.
prodigy_ said: Back to topic:
I don't think there' s a FOSS alternative to Exchange. And investing in Exchange is rather unwise unless you have Windows/Outlook clients. So it's either Windows all the way or a custom Linux-based solution which is entirely possible but may take quite some time to implement.
Have you looked at Zimbra?
prodigy_ said: Another problem is ActiveX. Unfortunately, if you need a browser that can work with ActiveX websites reliably, you need IE.
I agree that ActiveX is a problem. In fact, as a former web developer, I'd say that ActiveX provides all kinds of problems. But that's a different topic. It goes back to my previous question of what kind of business is being discussed; most businesses aren't web developers.
prodigy_ said: Finally, some professional software is still only available for Windows platform. FOSS alternatives may or may not exist and may or may not meet your requirements. That's something you need to investigate very thoroughly while you're planning the migration.
So, in short, everything is possible but you need to consider time, effort and costs involved. If you need to migrate existing infrastructure, it's a project that'll take you months (or even years) to prepare and push to production. Not to beat a dead horse, but we're back to the "what kind of business" question. For instance, i'm not convinced that the average banker, broker, accountant, doctor or attorney needs to rely upon the Adobe Creative Suite on a daily basis. If you could provide some specifics, that would be helpful.