AlltheInterweb's Internet Directory
Business-Directory.org.uk - Offers free business advertising to UK businesses.
Attracta Directory - Web Directory from one of the web's leading SEO companies.
Yelp - Yelp Business Directory & Reviews (UK Edition)
The Wholesaler - The Wholesaler UK is a directory for all types of retailer: shopkeepers, mail order companies, on-line shops, market traders... who are looking for new products and wholesale trade suppliers.
AlltheInterweb Directory - All the useful & interesting websites you'll ever need.
If you're reading this, you're already looking through it.
Open Directory Project - The most comprehensive human-reviewed directory of the web.
Google Directory - The web organized by topic into categories.
GlobalAir.com Directory - Web Directory of Aviation sites.
ListMyWebsite - a web directory where you can submit your website to get listed in the web directory. So, people who visit this website can find your website link and they can directly come to your website.
Oh Its Free - Canadian free Business Advertising.
Yell.com - Online edition of Yellow Pages, the UK's leading business directory.
UK Model Shop Directory - THE British Railway Modelling Directory on the Internet.
Scoot - UK Business Directory
FreeIndex - UK Business Directory & Reviews
Events in America - Directory of Trade Shows in the USA & Canada