Wikipedia
Open Source
Wikipedia is the most popular community-created knowledge base.
Lingoes
Free
Lingoes is a single-click multi-lingual translation software program released as a freeware translation utility.
Ludwig.guru
Free
Ludwig is a smart translator and linguistic search engine which helps you to find the perfect word or sentence to express your ideas.
StarDict
Open Source
StarDict is a free GUI released under the GPL for accessing StarDict dictionary files.
dict.cc
Free
dict.cc is a free, multilingual online dictionary. The site's database can also be downloaded and used offline.
Encyclopædia Britannica
Commercial
Encyclopædia Britannica is a general knowledge English-language encyclopaedia.
GoldenDict
Freemium
GoldenDict is a feature-rich dictionary lookup program, supporting multiple dictionary formats.
Google Dictionary
Free
Google Dictionary was an online dictionary service of Google, originating in its Google Translate service.
Everipedia
Free
Everipedia is the next generation online encyclopedia.
QuestSoft QTranslate
Free
QTranslate is a free translator for Windows.
Tagaini jisho
Open Source
Tagaini Jisho is a free, open-source Japanese dictionary and kanji lookup tool that is available for Windows, MacOS X and Linux.
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