MySQL - The world's most popular open source database
QlikSense - A business discovery platform that delivers self-service business intelligence capabilities
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
Looker - Looker makes it easy for analysts to create and curate custom data experiences—so everyone in the business can explore the data that matters to them, in the context that makes it truly meaningful.
SQLite - SQLite Home Page
Qlik - Qlik offers an Active Intelligence platform, delivering end-to-end, real-time data integration and analytics cloud solutions to close the gaps between data, insights, and action.