General Reference Sources
With more than 900,000 human-edited definitions, Acronym Finder is the world's largest and most comprehensive dictionary of acronyms, abbreviations, and initialisms.
Country-Based Search Engines
Country-specific search engines and regional search engines - a total of 4,017 search engines from 222 countries, territories, islands and regions.
Award-winning internet encyclopedia of mythology, folklore, and religion. Contains 7,000+ articles divided into six geographical regions: Africa, Americas, Asia, Europe, and Oceana. Each region has many clearly defined subdivisions.
The Unbound Bible
A collection of searchable Bibles in multiple versions and many languages. Search by section, book and verse or keyword and get up to four parallel translations at once. Very handy for Bibliocal quotes in texts.
General Multilingual Dictionaries:
English <-> French / German / Italian / Spanish.
A wikipedia-type online dictionary that started out German <-> English but now translates between these two languages and 22 additional European languages plus Icelandic, Latin and Esperanto. Constantly adding more words and more languages..
Corpus-based dictionary, search engine, and translation tool with which you can search hundreds of millions of bilingual texts for words and expressions. English <-> French <-> German <-> Portuguese <-> Spanish.
Translates between English and 15 other languages, including Arabic, Chinese, French, German, Korean, Japanese, Portuguese, Russian, and Spanish.