The early 90's saw the rise of powerful, inexpensive team collaboration software on one hand and huge document management systems on the other. Open source and cloud have brought us full circle. Today's businesses can implement extremely powerful productivity enhancing solutions quickly and easily. Alfresco capitalized on this trend. It used open source to get to the market quickly. It delivered functionality on par with legacy ECM as open source. Today, however, it is not just an open source alternative to things like Documentum and SharePoint, it is a visionary in the ECM market. This presentation tells that story, putting into context the things happening in ECM, collaboration, open source, and cloud from the 1990's to present day.