DBeaver - DBeaver - Universal Database Manager and SQL Client.
Flocknote - Flocknote helps super duper churches with their members.
DataGrip - Tool for SQL and databases
Rock RMS - Rock RMS is a community supported open-source Church Management System that provides innovative features to churches of all sizes.
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
ChurchSuite - ChurchSuite is a cloud hosted, web-based church management system, ideal church database software for churches.