Understanding Open Source Software Development [Paperback]

Raymond, in the Foreword, comments that this is the first attempt to pull together the various strands in the development of open source software that the pioneers of this approach have not had time, or perhaps the inclination, to put together themselves. This, indeed, appears to be the case. The authors have clear objectives: they note, in the introduction that they wished to produce a book that would be useful to both academic and professional readers:

The authors define Open Source Software by reference to the

(OSD),%20produced%20and%20maintained%20by%20the%20Open%20Source%20Initiative.%20That%20definition%20has%20nine%20elements%20to%20it,%20which%20describe%20the%20conditions%20a%20software%20licence%20must%20satisfy,%20if%20the%20software%20is%20to%20be%20considered%20'Open%20Source'.%20You%20could%20well%20be%20reading%20this%20review%20as%20a%20result%20of%20your%20server%20software%20being%20Apache, which has an OSD licence, and is the most used server software in the world, with (at November 2001) 56.5% of the market. Key among the terms of the licence are; that the vendor must maintain the integrity of the author's source code by providing 'patches' that make changes when the software is 'built' on the user's machine, rather than my modifying it before distribution; that there should be no discrimination against persons or groups of persons; and that the user should be able to modify the source code and share those modifications with the author and with others. The fact that companies like Red Hat, seller of the Linux programming language, Netscape and even IBM are happy to beome involved with OSS suggests that the process must bring benefits.

The authors describe the process that gives the benefits, noting that the process is parallel, with many developers simultaneously involved in the process, rather than a single software team in a commercial sofware company, that there is genuine peer review of suggestions and code in the process of creation, that there is increased user involvement, and that the process uses a succession of rapid releases of new versions, ensuring that users always have the latest version available quickly. The also explore also the weaknesses and problems of OSS, and en route, discuss the organizations involved in the OSS movement and how the development process in managed. They also suggest that the key issues in OSS are not technological, but sociological, in that the process explores a new way of working that may well extend into other fields of endeavour.

This book is well written, clear in its exposition, well illustrated with quotations from people in the OSS 'movement' and from other industry leaders and will serve as a useful text on this mode of software development.

The first author, Feller, maintains a Web site on open source software, which provides resources and links to supplement this text.

Professor Tom Wilson
Editor-in-Chief