Pootle - Multiple file formats.
DeepL Translator - DeepL Translator is a machine translator that currently supports 42 language combinations.
Crowdin - Localize your product in a seamless way
OpenL - Unofficial application of DeepL Translator
Dictionary.com - Dictionary.com is the world’s leading digital dictionary. We provide millions of English definitions, spellings, audio pronunciations, example sentences, and word origins.
dict.cc - dict.cc is not only an online dictionary translating from English and German to 21 languages.