DBeaver - DBeaver - Universal Database Manager and SQL Client.
IBExpert - IBExpert website
DataGrip - Tool for SQL and databases
FlameRobin - FlameRobin is a cross-platform, open-source database administration tool for Firebird DBMS.
Navicat - Powerful database management & design tool for Win, Mac & Linux. With intuitive GUI, user manages MySQL, MariaDB, SQL Server, SQLite, Oracle & PostgreSQL DB easily.
DbGate - Open Source Database Manager for SQL Server, MySQL, PostgreSQL, SQLite, MongoDB, Redis and more