In our efforts to find ways to lower project costs, we found something called open source software. In short, I can not? T understand how open source works. However, I feel we have to try open source as part of our effort to do the best job for our clients. Our experience with open source amazed us. Far from our nightmare vision of poor quality code distributed by a group of unqualified idealists flat, we found that robust products available that do more than enough? We can succeed with open source. I knew we were on to something when our clients started asking, "What other open source software can we use in our system?" Many of our clients accepted without question our open source recommendations, after all, the role of a professional services company is to serve as trusted advisors, and these clients expected us to fulfill that role. It wasn t nearly enough to present a slide that, under the selection criteria, stating "a man of system integrators to hear this is an open source product."? Even if our client will receive an informal method of selecting open source products for their projects, I feel uncomfortable with it. If we would recommend open source products as a key part of our client's infrastructure software,? I feel we need a more formal methodology that will assess the product along all the dimensions before we put it into production. From our development comes from the Open Source Maturity Model (OSMM). This model assessing open source products to date? Basically, their production-readiness. Which OSMM allows one or two people to evaluate an open source product with less than a week? Jobs. As we have been created? Systems based on open source for our clients, I? Have concluded that all IT users share their motivations. Open source will be widely used in industry. I believe that moving to open source is consistent with the trend of cost reduction in all industries via customer self-service and self-reliance. I believe that the software will tread the same path: a low price (free in the case of open source) is accompanied by more do-it-yourself job. Because of this belief, I decided to share our experience with open source. As becomes more widely used, formal methods to select and evaluate open source software and all elements will be very useful. You can take advantage of the system we use and shorten your learning curve with open source products.