SQuirreL 用Java编写，将与任何有JDBC驱动程序的RDBMS配合使用。

SQuirreL, written in java, will work with any RDBMS for which there's a JDBC driver.

发送SQL，呈现结果集，以及允许浏览数据库对象（从树）。对于多个RDBMS，它包括自动生成公共语句的扩展。

It works very well for both sending SQL, rendering result sets, and allowing browsing of database objects (from a tree). For several RDBMS, it includes extensions to automatically generate common statements.

特别好的是，查询窗格执行所选的sql或光标所在的行第一个空白行。

Especially nice is that the query pane executes either the selected sql, or the line the cursor is on up to the first blank line. This allows you to write several statements, and to execute them either individually or in a batch.

这是免费开源的。