rich media. In 2002, Documentum added collaboration capabilities with its acquisition of eRoom; Interwoven and Vignette countered with their acquisitions of iManage and Intraspect. Documentum purchased Bulldog for its digital asset management (DAM) capabilities; Interwoven and OpenText countered with acquisitions of MediaBin and Artesia. OpenText also acquired the European software companies IXOS and Red Dot. In October 2003, EMC Corporation acquired Documentum. IBM purchased FileNet and Oracle purchased Stellent in 2006; OpenText also purchased Hummingbird Ltd. that year. Hewlett-Packard (HP) acquired the Australian company Tower Software in 2008. In March 2009, Autonomy purchased Interwoven; OpenText acquired Vignette in July of that year and MetaStorm in February 2011. OpenText acquired Global 360 in July 2011, and HP agreed to purchase Autonomy in August 2011. In April 2007, CMS Watch principal Alan Pelz-Sharpe said: "Some of the biggest names in this business are undergoing substantial transformation that will lead to shifting road maps and product sets over the next few years". Nuxeo and Alfresco offered open-source ECM software that year. Gartner estimated in 2010 that the ECM market was worth approximately $3.5 billion in 2009; this was expected to grow at a compound annual growth rate of 10.1 percent through 2014. The market experienced a number of mergers and acquisitions in 2010. In 2014, Real Story Group (formerly CMS Watch) added cloud-based vendors to its 2014 ECM evaluations. See also Content Management Interoperability Services Enterprise content integration Enterprise output management Information governance Information science List of content management systems Repository Open Service Interface Definition Content management system Notes References Bibliography Content management systems Enterprise application integration Enterprise architecture Records management technology