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SQuirreL SQL Client

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SQuirreL SQL Client

Free

Java desktop application · JDBC drivers may need to be obtained separately

Every plan, in full

On the record

AI integration
The latest snapshot announced on the site offers MCP server functionality for AI tools to access SQuirreL sessions.squirrel-sql.sourceforge.io · read 9 Oct 2026
Cross database queries
The Multisource plugin supports queries across databases, cross database updates and synchronization, data virtualization, and SQL dialect and function translation.squirrel-sql.sourceforge.io · read 9 Oct 2026
Database connections
SQuirreL uses JDBC drivers to connect to databases, and the FAQ says it should work in theory with any DBMS that has a JDBC 2.0 driver.squirrel-sql.sourceforge.io · read 9 Oct 2026
Database connectivity
It can work with databases that have a compatible JDBC driver, which users may need to obtain from the database vendor.squirrel-sql.sourceforge.io · read 9 Oct 2026
Data import
The optional Data Import plugin imports Excel or CSV data into a database.squirrel-sql.sourceforge.io · read 9 Oct 2026
Driver availability
The project says most database drivers are not included because they are proprietary and vendors generally require users to download them directly.squirrel-sql.sourceforge.io · read 9 Oct 2026
Editable results
Query result tabs support editing rows returned from a query on a single table.squirrel-sql.sourceforge.io · read 9 Oct 2026
Extensibility
Java plugins extend the application, and plugins from its repository are included in the installer.squirrel-sql.sourceforge.io · read 9 Oct 2026
Extensible
Its functionality can be extended with Java plugins, and plugins in the project repository are included in the installer.squirrel-sql.sourceforge.io · read 9 Oct 2026
External data disclosure
The optional SQL Validator plugin sends SQL to a Mimer SQL web service for validation and stores validated SQL anonymously for use by the ISO SQL Standards committee.squirrel-sql.sourceforge.io · read 9 Oct 2026
Graphing
The Graph plugin can create and print charts of database tables and their foreign key relations, and supports query building with SQL generation.squirrel-sql.sourceforge.io · read 9 Oct 2026
Java requirement
The 5.1.0 release requires at least Java 17.squirrel-sql.sourceforge.io · read 9 Oct 2026
License
The project says it has been released under the GNU Lesser General Public License since version 1.1beta2.squirrel-sql.sourceforge.io · read 9 Oct 2026
Operating systems and Java
The project provides installers for Windows, Linux, and MacOS, and says SQuirreL 5.1.0 requires at least Java 17.squirrel-sql.sourceforge.io · read 9 Oct 2026
Password security
The 5.1.0 feature highlights include enhanced security for encrypting Alias passwords.squirrel-sql.sourceforge.io · read 9 Oct 2026
Plugin examples
Available plugins include data import from Excel or CSV, table graphing, schema refactoring, and cross-database queries.squirrel-sql.sourceforge.io · read 9 Oct 2026
Purpose
SQuirreL is a graphical Java client for viewing JDBC database structure, browsing table data, and issuing SQL commands.squirrel-sql.sourceforge.io · read 9 Oct 2026
Result editing
Query result tabs support editing rows returned from a query on a single table.squirrel-sql.sourceforge.io · read 9 Oct 2026

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