GinGin is a hybrid of WIKI and BLOG. Users of GinGin can setup tags for their documents. The documents will be hyper-linked, automatically, when tags are in the content of them. In another word, GinGin will create cross-reference for documents by the tags specified by users. GinGin also has capability to tag URLs. URLs are associated with tags and cross-referenced for documents. WWW: http://trac-hg.assembla.com/GinGin