Weblate - Weblate is a free web-based translation management system.
Crowdin - Localize your product in a seamless way
SDL TRADOS - Computer-Assisted Translation tool, enabling the use of Translation memory.
POEditor - The translation and localization management platform that's easy to use *and* affordable!
OmegaT - OmegaT is a free open-source translation memory application for professional translators written in Java.
BabelEdit - Edit your json, yaml, php, vue or properties translation files with ease.