Preserving (Digital) Objects With Restricted Resources (POWRR) has created a useful grid that tracks 24 different features of over 45 digital preservation tools, ranging from the very basic (e.g. Dropbox) to powerful, full-service platforms (e.g. Portico). The information was culled from tool websites, contacting the tool developers directly, discussion boards, and some direct tool testing, and POWRR also includes a short biography for each tool.
