Dictionary.com
Free
Dictionary.com is an online dictionary platform.
Wiktionary
Open Source
Wiktionary is a multilingual, web-based project to create a free content dictionary of all words in all languages.
WordReference
Freemium
WordReference is an online translation dictionary for, among others, the language pairs English-French, English-Italian, English-Spanish, French-Spanish, Span…
Merriam-Webster
Free
Merriam-Webster is an online dictionary.
Compare Wordo with alternatives
Compare Dictionary.com and Wordo and decide which is most suitable for you.
Compare WordReference and Wordo and decide which is most suitable for you.
Compare Merriam-Webster and Wordo and decide which is most suitable for you.