Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
BabelNet - The largest multilingual encyclopedic dictionary and semantic network
LibreTranslator - Android translation app with translations from LibreTranslate
Mate Translate - Ultimate translation app for Mac, iOS, Chrome and many more
DeepL Translator - DeepL Translator is a machine translator that currently supports 42 language combinations.
LibreTranslate - LibreTranslate is a free and open-source and self-hostable machine translation server. It also has a public instance designed for personal or infrequent use.