OmegaT - OmegaT is a free open-source translation memory application for professional translators written in Java.
Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
Crowdin - Localize your product in a seamless way
Lingvanex Translator for Slack - Auto-translate messages, documents and images in Slack
Transifex - Transifex makes it easy to collect, translate and deliver digital content, web and mobile apps in multiple languages. Localization for agile teams.
Inspector Spacetime from Google - Google Translate for engineers working with motion