MySQL - The world's most popular open source database
Crowdin - Localize your product in a seamless way
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
POEditor - The translation and localization management platform that's easy to use *and* affordable!
SQLite - SQLite Home Page
Lokalise - Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.