Open Source: The Unathorized White Papers is a real contrast to the other more well known book I've read on the subject, The Cathedral and the Bazaar. While Cathedral and Bazaar reads like a series of unorganized USENET posts and random musings, Open Source is very well organized, and professionally written and edited. It contains up to date and accurate information about a range of topics relating to open source, including history, examples of businesses, and licensing.
The book's coverage of licensing is easily the most complete source for understanding a very complex subject. There are so many misconceptions of what licensing means in terms of software that the book is a must read if you either run a software company or are considering investing in one.
The only issue I have with the book is its description of the Java programming language as not having "a community". Being on the board of directors for the local Java User's Group I naturally take issue with that characterization, but for the sake of brevity, as well as sticking to the topic at hand, I will refrain from bringing out the voluminous amount of evidence to the contrary. :-)
For disclosure, I must admit to having met Mr. Rosenberg in the Research Triangle Park area of North Carolina. This isn't hard to do, considering he attends meetings of nearly every technical group I can think of, and is an expert on "people" networking.
