It has been an absolutely enjoyable activity to work in the context of the FLOSSMETRICS project with the overall idea of helping SMEs to adopt, and migrate to, open source and free software. My proposed approach was to create an accessible and replicable guide, designed to help both those interested in exploring what open source is, and in helping companies in the process of offering services and products based on OSS; now, two years later, I found references to the previous editions of the guide in websites across the world, and was delighted in discovering that some OSS companies are using it as marketing material to help prospective customers.
So, after a few more months of work, I am really happy to present the fourth and final edition of the guide (PDF link) that will (I hope) improve in our previous efforts. For those that already viewed the previous editions, chapter 6 was entirely rewritten, along with a new chapter 7 and a newly introduced evaluation method. The catalogue has been expanded and corrected in several places (also thanks to the individual companies and groups responsible for the packages themselves) and the overall appearance of the PDF version should be much improved, compared to the automatically generated version.
I will continue to work on it even after the end of the project, and as before I welcome any contribution and suggestion.