The National Endowment for the Humanities (NEH)-funded Chronicles in Preservation project (http://metaarchive.org/neh/) completed this Comparative Analysis of three Distributed Digital Preservation systems to analyze their underlying technologies and methodologies: -Chronopolis using iRODS (http://chronopolis.sdsc.edu/). -University of North Texas using Coda (http://www.library.unt.edu/). -MetaArchive Cooperative using LOCKSS (http://metaarchive.org/). This Comparative Analysis is not intended to designate any of the Distributed Digital Preservation (DDP) systems as superior or inferior to one another in any of the areas disclosed. On the contrary, digital preservation is often best served by maintaining a variety of solutions, and each of the three DDP systems have partnered actively with one another on several digital preservation initiatives and are learning constantly from one another’s approaches. The Chronicles in Preservation project, and more specifically, this Comparative Analysis, has been undertaken by these three systems in order to test, document, and refine their processes, not in isolation, but as a collaborative effort.