Biblioscape
http://www.biblioscape.com/biblioscape.htm
$50-$500
Citation -
http://citationonline.net/ Keep your research notes and
references at your fingertips as you write.
Endnote http://endnote.com/
$240 - $300
Nota Bene
http://www.notabene.com/secure/order_forms/all.html
$350-$450
XYWrite
Evaluation of Reference Management Software
