Froogle:
Developed by Google, Inc. One of the most promising price comparison sites to date.
BizRate:
One of the largest price search sites. Over 30 million products listed.
Shopping.com:
Child of Dealtime and Epinions, now merged to provide you with three shopping search engines that feature your products separately, yet the same.
Yahoo Shopping:
Complete Yahoo Shopping data feed creation and maintenance solutions.
MSN Shopping:
Complete MSN Shopping data feed creation and maintenance solutions.
NexTag Shopping:
Complete NexTag data feed creation and maintenance solutions.
PriceGrabber Shopping:
Complete PriceGrabber data feed creation and maintenance solutions.
Americana Exchange Rare Books
Worldwide book auction calendar and listings, and an extensive bibliographical database. Focus on Americana.
Odd Volumes United
Dealers can make dead stock pay. Collectors can find the dust jackets that make their modern firsts fully valuable. Researchers and libraries can acquire that needed missing periodical.
Bibliographic Research
Company offering evaluation and certification of old and rare books.