Linköping Studies in Science and Technology Dissertations, No. 1438, 2012 2012 Thomas Rosenfall Open Source Vendors’ Business Models Linköping Studies in Science and Technology Dissertations No. 1438, 2012 Linköping University Department of Management and Engineering SE-581 83 Linköping, Sweden www.liu.se Open Source Vendors’ Business Models Thomas Rosenfall