Aard Dictionary is a free, fast word lookup program.

Dictionary.com is an online dictionary platform.

Google Translate is a cloud based language translator developed by Google.

Merriam-Webster is an online dictionary.

Tagaini Jisho is a free, open-source Japanese dictionary and kanji lookup tool that is available for Windows, MacOS X and Linux.

Wiktionary is a multilingual, web-based project to create a free content dictionary of all words in all languages.

dict.cc is a free, multilingual online dictionary. The site's database can also be downloaded and used offline.

GoldenDict is a feature-rich dictionary lookup program, supporting multiple dictionary formats.

Lingoes is a single-click multi-lingual translation software program released as a freeware translation utility.

Reference.com is an online encyclopedia.

Tatoeba.org is a free collaborative online database of example sentences geared towards foreign language learners.

WordReference is an online translation dictionary for, among others, the language pairs English-French, English-Italian, English-Spanish, French-Spanish, Span…