Trade-offs: Open Source vs. Commercial Office Software

 

From: Candace B. Rittenoff, Chief Financial Officer
To: You
Re: Money for nothing?
I am wondering why we are paying six figures to Microsoft each year when there are open source alternatives to Exchange Server and MS-Office.
What are the trade-offs between open source and commercial officing software? Is open source actually free? If not, how do we cost it against commercial software? What factors other than price should we be considering? Memo, please.