SQLTools++ - Home of SQLTools++
SQL Developer - Oracle SQL Developer is a free, development environment that simplifies the management of Oracle Database in both traditional and Cloud deployments.
TOra - tora - TOra is an open source SQL IDE for Oracle, MySQL and PostgreSQL dbs.
phpMyAdmin - phpMyAdmin is a tool written in PHP intended to handle the administration of MySQL over the Web.
DBeaver - DBeaver - Universal Database Manager and SQL Client.
MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.