WebDewey is a browser-based version of the Dewey Decimal Classification® (DDC®) database and is updated quarterly. It is designed to make your classifying activities more efficient and enjoyable by allowing you to point and click your way through the latest version of the DDC 23 database.
WebDewey is the easiest way to search or browse up-to-date DDC numbers as well as Library of Congress Subject Headings and mapped MeSH subject headings. Through WebDewey records, you can access authority records as well as links to other related information. You can also customise the layout of the screen and add searchable comments to numbers for later reference.
Introduction to WebDewey 2.0 - documentation
Introduction to WebDewey - recorded session
Exercises for WebDewey 2.0