• RanDmoz - Displays random web sites from the entire ODP or from specific categories.
• RankSearchEngine.com - Directory based on the Open Directory, with ntegrated website snapshots from Thumbshots.
• Recovery Helper - Includes a copy of the Open Directory categories on substance abuse.
• Reference.com - Lexico Publishing Group provide an English dictionary and On This Day, with additional reference material from Crystal Reference, The Columbia Encyclopedia, and Wikipedia. Web directory uses ODP data.
• Regiochannel United Kingdom - Arranges the ODP data from the United Kingdom categories to provide quick links to the largest cities. Advertising by Google.
• Religion Explorer - Provides a copy of the Open Directory categories on religion, with added site previews by Thumshots. Also uses Aspseek technology to provide a search engine restricted to sites listed in those categories.
• rfresource.com - Radio frequency site uses business category of ODP directory.
• Rome-Online - Directory of accommodation in Rome, which includes a copy of the Open Directory.
• The Rukmapura Park Hotel and Park Chalets - Hotel uses the Hotel category of ODP.

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