Dixio!

Google Translate is a free online translation service that can instantly translate text and web pages between over 50 languages.

GoldenDict is an open-source dictionary program for PC computers that gives translations of words and phrases for different languages. It allows use of several popular dictionary file formats simultaneously.

The free Dictionary.com app delivers content from Dictionary.com and Thesaurus.com, including nearly a million words and definitions and 90,000 synonyms and antonyms. No internet required!

Google's dictionary extension on Google Chrome. With it, you can double-click any word to view its definition in a small pop-up bubble, or search the complete definition of any word or phrase using the address bar dictionary. The Dictionary extension supports 11 different languages.

Wiktionary is a multilingual, web-based project to create a free content dictionary, available in 158 languages. Unlike standard dictionaries, it is written collaboratively by volunteers, dubbed "Wiktionarians", using wiki software, allowing articles to be changed by almost anyone with access to the website.

WordReference is a free online Oxford dictionaries for Spanish, French, Italian, German and more. Conjugations, audio pronunciations and forums for your questions.

Free online dictionary, thesaurus, spanish-english and medical dictionaries, audio pronunciations, Word of the Day, word games, and many more high-quality Merriam-Webster language resources.

dict.cc is not only an online dictionary translating from English and German to 21 languages. Its an attempt to create a platform where users from all over the world can share their knowledge in the field of translations. Every visitor can suggest new translations and correct or confirm other users suggestions. The challenging and most important part of the project is the so-called Contribute! system making this process possible.

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia encyclopedia, Wikipedia encyclopedia, examples from classic literature, pronunciations, word browser, glossary.

S3.Google Translator - this extension for Mozilla Firefox browser make much easy visit of websites on foreign language. Translation of selected text, introduced by a phrase or a fully web-site from any language to any language

Reference.com offers a massive online dictionary, thesaurus, encyclopedia, quote finder, and translator (powered by Google Translate)- all for free. For the Dictionary.com and Thesaurus.com mobile app, go here. Dictionary.com

Infogalactic is an Internet-based, free-content encyclopedia project that is a dynamic fork of Wikipedia and improves upon the online encyclopedia's model of openly editable content. Infogalactic's pages are interlinked in order to connect the user to related pages with additional information, and are categorized in a variety of ways, including Relativity, Notability, and Reliability to allow the user to prioritize his personalized perspective

Your Mac also comes with a versatile Dictionary application. It also includes to other reference libraries such as thesaurus, Apple glossary, and Wikipedia. With it, you can find definitions, learn of the word's origin, find synonyms and antonyms, or get encyclopedic knowledge about any subject.