I think it's lovely that you're proving that Microsoft is the evil empire, and that you can perform every function you need without utilizing any of their products. Good for you. I'm sure your mother is very proud.
However, WE are a large corporation who needs to send documents back and forth to many other large corporations, and we require a certain uniformity in order to function/do business on a daily basis. So while it's lovely that you used some open source, available on the web, sticking-it-to-the-man super spiffy compression software to send over your documents, I CAN'T OPEN THEM. The very first thing I have to do to open them is "download the free software." Hate to break it to you, but most corporations really, really, really frown on individual employees downloading executables onto the company servers. As a matter of fact, that's a firing offense. I like this job, and I'm not endangering it for you.
At this point in the day, I don't have time to open a ticket to try to get to your proposal. Perhaps I'll fight with it tomorrow. Or not. Hope that works for you.