Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
mText2Speech - Break down language barriers and instantly translate between over 90 languages.
Linguee - English Dictionary and Translation Search with 1,000,000,000 example sentences from human translators. Languages: English, German, French, Spanish, and Portuguese
Spanish to English - Instant Spanish to English translation. Thousands words and phrases available!
BabelNet - The largest multilingual encyclopedic dictionary and semantic network
DeepL Translator - DeepL Translator is a machine translator that currently supports 42 language combinations.