Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
MacLinguist - A pop-up translator for Mac and Windows that works with any application
Mate Translate - Ultimate translation app for Mac, iOS, Chrome and many more
Linguee - English Dictionary and Translation Search with 1,000,000,000 example sentences from human translators. Languages: English, German, French, Spanish, and Portuguese
mText2Speech - Break down language barriers and instantly translate between over 90 languages.
DuckDuckGo - The Internet privacy company that empowers you to seamlessly take control of your personal information online, without any tradeoffs.