Dictionary.com
Free
Dictionary.com is an online dictionary platform.
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.
Merriam-Webster
Free
Merriam-Webster is an online dictionary.
Wordnik
Free
Wordnik is an online English dictionary and language resource that provides dictionary and thesaurus content.
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.
Wiktionary
Open Source
Wiktionary is a multilingual, web-based project to create a free content dictionary of all words in all languages.
Reference.com
Free
Reference.com is an online encyclopedia.
Wordo
Free
Wordo helps you find word definitions.
Compare WordReference with alternatives
Compare Dictionary.com and WordReference and decide which is most suitable for you.
Compare Ludwig.guru and WordReference and decide which is most suitable for you.
Compare StarDict and WordReference and decide which is most suitable for you.
Compare Wiktionary and WordReference and decide which is most suitable for you.
Compare dict.cc and WordReference and decide which is most suitable for you.
Compare Reference.com and WordReference and decide which is most suitable for you.
Compare Merriam-Webster and WordReference and decide which is most suitable for you.
Compare Wordo and WordReference and decide which is most suitable for you.
Compare Wordnik and WordReference and decide which is most suitable for you.