If you are a startup or even a large corporation, you can do worse than use Google's Office Suite. It can read most Word, Excel and Powerpoint files from Microsoft and it can definitely export to them for compatibility with clients.
All you need is a Google email account which is still FREE last time I looked.
You are allocated a few Gb of space BUT here is the trick, any documents you create in Google are NOT added to your file count. So what I do is upload the Word document, convert / save is as a Google Document and then delete the Word one - zero bytes in use :-)
Try it out and be amazed.