Mirage, a clean and professional looking theme for XMLUI.
dri2xhtml-alt, and xmlui theme development framework that eases XMLUI theme development.
See Mirage in action at http://demo.dspace.org/xmlui. For a video demo see: http://www.youtube.com/watch?v=Pq3d_oD-4aM

Mirage was contributed by @mire, NV.

Discover, a faceted browsing and searching interface that gives a deeper and more intuitive look at repository contents.
See Discovery in action at http://demo.dspace.org/xmlui. For more information, watch the video introduction to Discovery.

Discovery was contributed by @mire, NV.

Archival Information Package (AIP) Backup & Restore process. Allows for a backup of DSpace into a generic METS-based structure, that can be used to migrate DSpace content to another system that supports AIP's (DSpace or non-DSpace). This backup and restore functionality also allows one to backup to cloud storage services like DuraCloud, though it could just as easily be used to backup to tape or a hard drive.

Added by Tim Donohue (DuraSpace)

Curation System , a framework for building and running tasks to help a Curator preserve and improve your repository contents.
Tasks can be run on communities, collections, and items through the command line for cron-tasks, or through the User Interface for admins.
The initial tasks available are:* Profile Bitstream Formats -- counts the number of bitstreams that share the same file format extension. 

• Virus Scan -- inspect the bitstreams with a virus scanner (ClamAV) to detect if they contain viruses
• Check for Required Metadata -- checks that item metadata has values for all fields marked as required in the input-form
  
  Added by Richard Rodgers (MIT)

Automated Unit Testing of core code -- helps the developers ensure that DSpace is as bug free and stable as possible. Unit Testing coupled with continuous integration on our bamboo server allows us to validate every change to the DSpace code base. Thus letting us know immediately if something changed broke another feature.

Added by Pere Villega, a product of DSpace Summer of Code2 2010 (mentor Stuart Lewis).

Improved Google Scholar metadata exposure. Additional citation_ tags have been exposed to allow the Google Scholar crawler to find better associate repository metadata and PDF content.

Added by Sands Fish, Richard Rodgers (MIT) and Peter Dietz (Ohio State)

PowerPoint text extraction, for searching within PowerPoint slides

Added by Keith Gilbertson (Georgia Tech)

Top 10 Most Visited items list, available for the overall site.