Apache Doris - Apache Doris is an open-source real-time data warehouse for big data analytics.
DBeaver - DBeaver - Universal Database Manager and SQL Client.
ClickHouse - ClickHouse is an open-source column-oriented database management system that allows generating analytical data reports in real time.
DataGrip - Tool for SQL and databases
MySQL - The world's most popular open source database
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.