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DBeaver - DBeaver - Universal Database Manager and SQL Client.
Adminer - Adminer (formerly phpMinAdmin) is a full-featured database management tool written in PHP.
DataGrip - Tool for SQL and databases
dbMonitor - dbMonitor performs per-component tracing of commit, rollback, SQL statement execute, creating/destroying components, connection pooling events, etc.
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
PHPLiteAdmin - For SQLite what phpMyAdmin is for MySQL - the perfect administration tool