Not one I've come across before...

Cheers

Chris

-----------------------

See www.indexdata.com

from the web4lib list:

"I am trying to get the word out about Index Data's Keystone Digital
Library
Suite, which has built-in federated searching capabilities.

Index Data is the only commercial vendor in the library market that offers
production-grade digital library software under a GNU General Public
License.  Index Data customizes, installs and supports Keystone DLS as a
turnkey system.  But the software is open source, so you can examine the
code, modify it, and even give it away under the terms of the GNU GPL.  No
money is exchanged for the license.  We charge for customization,
installation and maintenance.  The software is yours for free to keep
forever.  If you've got some crack programmers working at your library, you
can even freely download our generic version of Keystone from the Index
Data website (www.indexdata.com).

Keystone DLS supports, in one integrated package, digital content
management, web-based information portals, and federated
searching/metasearching.  Because Index Data developed the C and C++
toolkits that power most of the world's Z39.50 servers, as well as many
other Z39.50 services and toolkits, our developers know more about this
technology than any other company in the world.  Keystone supports
non-Z39.50 searching as well, and it is built from the ground up with XML
technology. It has a built-in metadata harvester, and we plan to include an
OpenURL link resolver as part of the Keystone Suite before the year is out.

Keystone is going to revolutionize how libraries provide digital library
services-through the power of open standards coupled with open source
software.

That revolution has already started.  Keystone is installed and in
production at the Texas State Library and Archives' Library of Texas site,
http://www.libraryoftexas.org/.  Take it for a spin.  When Index Data won
the Texas State bid last year, it was competing against Auto-Graphics, Blue
Angel Technologies, Dynix (in conjunction with MuseGlobal), Ex Libris,
Fretwell-Downing, Innovative Interfaces, OCLC, and Sirsi.  Find out for
yourselves why Texas selected Keystone over other offerings.  It wasn't
just the fact that it was open source software.  It was also the fact that
Keystone represents the best combination of service, functionality,
software quality, and advanced technology available today.

Index Data will be demonstrating Keystone at the upcoming ALA Annual
Conference in Orlando.  If you will be there, our booth number is 2987.

Index Data is headquartered in Copenhagen, with offices in London and
Middletown, CT, where yours truly is located.  The company plans to form a
US subsidiary later this year.