Crowdin - Localize your product in a seamless way
Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
POEditor - The translation and localization management platform that's easy to use *and* affordable!
Mate Translate - Ultimate translation app for Mac, iOS, Chrome and many more
Lokalise - Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.
Microsoft Translator - Microsoft Translator is your door to a wider world.