Page History

...

The Commenting add-on consists in a set of classes, servlets and custom tags that bring informal communication capabilities to the DSpace environment. The informal communication is assured by a threaded forum that can be attached to any DSpace resource: web-page, community, collection, submitted item or e-person. The add-on allows comments to be inserted by anonymous users as well as by authenticated ones. Functionality for reviewing comments is also provided with the add-on.

Version

...

Compatibility:

...

1.1.1, 1.2
Link:   http://dspace-dev.dsi.uminho.pt:8080/en/addon_commenting.jsp
Contributor: University of Minho

Dublin Core Meta Toolkit

The Dublin Core Meta Toolkit transforms data collected via different methods into Dublin Core compatible meta data. The Toolkit is ideal for converting formats from Microsoft Access, MySQL and comma delimited value (CSV).
Version Compatibility: 1.5.1
Link: http://sourceforge.net/p/dcmetatoolkit/wiki/Home/
Contributor: Hayden Young from Wijiti

Embargo

Allow for embargoed item metadata to be indexed and viewed, but representations of the item cannot be retrieved.
1Version Compatibility: 1.5.1x
Link: Emetsger__Embargo
Contributor: Elliot Metsger from Johns Hopkins University

Joomla!   Collections, Archives and Repositories 

Open up your digital asset repositories to the public through the Joomla! content management system. Display and browse digital assets, retrieve related items and search communities and collections and build exhibitions and galleries using your digital assets without having to install and manage complex software. 

1Version Compatibility: 1.5.1
Link: http://www.openrepository.com/products/cms-integration, http://joomlacode.org/gf/project/j-car/ (dead link) 
Hayden Young from Wijiti, Michael Guthrie from Open Repositories

Lightweight Network Interface

A simple but comprehensive network interface that was developed as part of the CWSpace project. It was designed to be complete enough for most programmatic uses of the DSpace API, particularly submitting and extracting archived materials as packages or byte streams.
1.5.2
Link
Larry Stone from MIT

...