Anki - Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.

Crowdin - Localize your product in a seamless way

Memrise - Learn a new language with games, humorous chatbots and over 30,000 native speaker videos.

POEditor - The translation and localization management platform that's easy to use *and* affordable!

RemNote - All-in-One Tool For Thinking & Learning

Lokalise - Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.