Crowdin - Localize your product in a seamless way
Lokalise - Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.
Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
Phrase - A platform offering AI-powered translation tools for localization at scale.
Microsoft Translator - Microsoft Translator is your door to a wider world.
Transifex - Transifex makes it easy to collect, translate and deliver digital content, web and mobile apps in multiple languages. Localization for agile teams.