Crowdin - Localize your product in a seamless way
Alexa Translations - Breaking The Language Barrier™
POEditor - The translation and localization management platform that's easy to use *and* affordable!
PROMT Translator - PROMT Free Online-Translator.
Lokalise - Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.
DeepL Translator - DeepL Translator is a machine translator that currently supports 42 language combinations.