Glosbe - Huge collaborative massively multilingual dictionary.
Crowdin - Localize your product in a seamless way
Wordnik - the biggest online English dictionary, by number of words
Reference.com - Reference.com is the #1 question answering service that delivers the best answers from the web and real people - all in one place.
VerbAce - VerbAce-Pro is an easy-to-use Desktop Translation Software. Translate in a mouse click
DeepL Translator - DeepL Translator is a machine translator that currently supports 42 language combinations.