Aard Dictionary is a free, fast word lookup program.

Crowdin is a localization project management platform and translation tool for developers and website owners.

Dictionary.com is an online dictionary platform.

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

Ludwig is a smart translator and linguistic search engine which helps you to find the perfect word or sentence to express your ideas.

QTranslate is a free translator for Windows.

Artha is a handy thesaurus based on WordNet with distinct features like global hotkey look-up, passive desktop notifications, regular expression based search,…

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

FCorp English Dictionary is a portable English Dictionary that uses various search methods.

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

Merriam-Webster is an online dictionary.

Reference.com is an online encyclopedia.