Memrise is a Language learning Platform with a website and iOS and Android Apps.

WordWeb is an international English dictionary and thesaurus program for Microsoft Windows, iOS, Android and Mac OS X.

ABBYY Lingvo Dictionaries for desktop and mobile devices let you translate words, expand your vocabulary and master foreign languages.

Merriam-Webster is an online dictionary.

Babylon is a computer dictionary and translation program.

Dictionary.com is an online dictionary platform.

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

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

Cram is an online platform to create and share online flashcards.