Websites on Directories:
AllDictionaries.com
Collection of language and translation dictionaries.
Campus Program: Language Dictionaries
A compilation of a large number of dictionary websites grouped by language.
Collection of Web-Dictionaries
Directory of links to hundreds of translation dictionaries covering dozens of languages, compiled by Mike Genso.
Dictionaric
A collection of translating dictionaries by Patrick Jouannès. Various languages. Anthroponymic glossaries of English, French, and Arab names.
Dictionaries, Lexica and Lexical Resources
Collection of links to various online dictionaries and other lexical references.
Dictionaries on the Web
Link collection -- over 100 links to various dictionaries of about 40 languages.
Dictionarium
Directory of English and foreign-language dictionaries.
EZresearch.com
Provides a directory of dictionaries.
Free Dictionary and Free Translation
Collection of free dictionaries and translation sites. Supports searching all dictionaries with just one mouse click.
Glossaries by Language
Directory of multilingual dictionaries and dictionaries on specific subjects, alphabetized by language.
The Glossarist
Searchable directory of glossaries and topical dictionaries containing terms and definitions on hundreds of subjects.
Lexicool
Searchable directory of bilingual and multilingual dictionaries.
List of Dictionaries
Directory by the University of Paderborn, Germany.
Planet Translation
Directory of dictionaries, including unilingual, multilingual, and topical resources.
yourDictionary.com
An index of on-line dictionaries in over 200 different languages. Includes an index of on-line grammars, word of the day by email, and several pages of linguistic fun.