H2 implements an embedded and standalone ANSI-SQL89 compliant SQL engine
DBeaver is an open source universal database tool for developers and database administrators
SQL Workbench/J is a free, DBMS-independent, cross-platform SQL query tool
HeidiSQL is a database query tool that supports MySQL, Microsoft SQL Server and PostreSQL databases
SQL Server Management Studio (SSMS) is an integrated environment for managing any SQL infrastructure
Oracle SQL Developer is a free, integrated development environment
Flyway lets you regain control of your database migrations
Jailer is a tool for database subsetting, schema and data browsing