General

willyancey.com provides a comprehensive list of links to sites of interest in business, tax, law, data analysis, statistics, ecommerce, etc.

Office Add-ins offers a wide range of add-ins tools for Excel, Outlook, and other applications.

Synkronizer a rather useful add-in for Excel that compares, updates and synchronizes Excel spreadsheets.

Online Statistics Books

HyperStat is an excellent resource for the beginner and the expert alike, contains collection of online books covering wide range of statistical principles.

Statistical Data Sources

Statistical Resources on the Web contains links to many data sources in Business, health etc, maintained by the University of Michigan

Statistical Directories and Compendiums

Statsci.org a directory of statistical resources on the WWW, very comprehensive

Statistics on the Web provides a comprehensive set of links to different organizations, products, services and people connected with statistics

The World Wide Web Virtual Library: Statistics, list of statistic departments, organizations, services, products from around the world, maintained by The University of Florida's Department of Statistics

Decision Analysis

Brief business focused tutorial that explains the fundamental advantages and concepts of using desicion trees through short real-world scenarios, by Rafael Olivas.

Business

MBADepot a good source of business related information and advice aimed mainly at MBAs.

Business and the Environment

Sustainable Solutions Limited interesting entrepreneurial supplier of domestic recycled waste containers for location in housing estates and public places. Unique incorporation of corporate sponsored advertising on containers.