This page offers information on how to obtain complete content dumps of RationalWiki for backup or for forking the project at other locations.
Most of the content at RationalWiki is released under the CC-BY-SA 3.0 license, which means it is freely available for reuse by anyone as long as any modifications are released under the same or similar license and credit is given to RationalWiki as the source. Image copyrights are contained within the XML dump - many images in the tarball are fair use, so don't reuse them out of context unless you know what you're doing. For complete licensing information refer to RationalWiki:Copyrights.
While manual replication of content is easiest for a few pages only, content dumps are ideal for complete replication of the site or for content backup.
Kiwix is doing monthly dumps for their offline Kiwix wiki reader. Latest dump: http://download.kiwix.org/zim/rationalwiki_en_all.zim
Full history XML and image dumps are now available at the Internet Archive: