Alfresco offers true Open Source Enterprise Content Management (ECM) – Document Management, Collaboration, Records Management, Knowledge Management, Web Content Management and Imaging.
Nutch is open source web-search software. It builds on Lucene Java, adding web-specifics, such as a crawler, a link-graph database, parsers for HTML and other document formats, etc.
MozDex is a search engine seeded from the dmoz.org directory. MozDex uses open source search technologies to create an open and fair index. Our goal is to be able to provide a powerful and open search service to the community. Mozdex is built around the Nutch Search technology.
list of known auto-categorization / taxonomy management tools.
FaceTag is a working prototype of a semantic collaborative tagging tool conceived for bookmarking information architecture resources. It aims to show how the flat keywords space of tags can be effectively mixed with a richer faceted classification scheme to improve the system information architecture
Wire.fan looks exacly like BlinkList Social Bookmarks, even when you search ‘WIREFAN’ in Google it shows:
“WIREFAN BlinkList your personal startpage..”
... exactly like Blinklist in Google search results!
If it disapears there are some screenshots here
Using SWIK I’ve come across some details I think would be useful:
uppercase lower case tags, does not seem to make any difference when searching! Very nice!
Open Source Powered partially by Google and Aspell The code is free
User:ycc2106: 3spots SWIK Bookmarks
Google
tools
aspell
web-based
open+source
User:ycc2106
spell+checker