dbForge Query Builder for MySQL is a visual tool that allows to create any sort of MySQL queries, from simple lookups to complex JOINs. The tool provides broad compatibility options and helps creating and editing complex MySQL queries in just a few clicks. You don't need to type any code at all - just "draw" your query on a diagram. When you need to type some SQL code manually, comprehensive suggestions will simplify the task.
Advanced Query Tool - Database query tool for DB2 LUW, DB2 z/OS, Oracle, Sybase, SQL Server, MySQL
Open DBDiff - A database comparison tool for Microsoft SQL Server 2005+ that reports schema differences and...
DBeaver - DBeaver - Universal Database Manager and SQL Client.
Redgate SQL Data Compare - Use Redgate SQL Data Compare to compare and synchronize static, lookup, and reference data in your SQL Server database - try it free
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
TiCodeX SQL Schema Compare - SQL Schema Compare supports Database schema compare for MS-SQL, mySQL and Postgres and runs on Windows, Linux and MacOS