Sybase jConnect for JDBC
- Type 4 JDBC driver for Sybase and other databases.
- http://www.sybase.com/products/allproductsa-z/softwaredeveloperkit/jconnect

MySQL Connector/J
- Type 4 JDBC driver for the MySQL Database Server (formerly MM.MySQL). [Open Source, GPL/LGPL]
- http://www.mysql.com/products/connector/j/

JDBC Drivers Database
- Sun's list of available JDBC drivers.
- http://developers.sun.com/product/jdbc/drivers

jxDBCon JDBC Driver Framework
- Open source JDBC driver framework for developers. Includes a type 4 driver implementation for PostgreSQL. [Open Source, LGPL]
- http://jxdbcon.sourceforge.net/about.en.shtml

RmiJdbc
- Type 3 (JDBC to JDBC) driver based on Java RMI. [Open Source, LGPL]
- http://rmijdbc.objectweb.org/download.html

Hxtt JDBC Drivers
- Providing Type 4 JDBC drivers for MS Access, MS Excel, Corel Paradox, Text (CSV, fixed length, variable-length), and Xbase (dbase, Foxbase, Foxpro, Clipper). [Commercial]
- http://www.hxtt.com

SmallSQL
- Type 4 JDBC driver for SmallSQL Database. [Open Source, LGPL]
- http://www.smallsql.de/

Ashpool
- Type 4 JDBC driver for XML Database (not maintained for a long time). [Open Source, MIT License]
- http://ashpool.sourceforge.net/

CsvJdbc
- Type 4 read-only JDBC driver for Comma Separated Value (CSV) (not maintained for a long time) files. [Open Source, LGPL]
- http://csvjdbc.sourceforge.net/

JET Proxy JDBC Driver
- RMI based Type 3 JDBC driver for use with other JDBC drivers. [Free]
- http://jmatrix.net/content/jetproxy_home.jsp

i-net Software JDBC Drivers
- Type 4 drivers for MS SQL Server, Oracle, Sybase, DB2, Plain Text and a type 3 JDBC to JDBC driver. [Commercial]
- http://www.inetsoftware.de/products/jdbc/

OpenAccess JDBC Driver SDK
- A toolkit and run-time components to allow development of custom JDBC drivers. By Automation Technology, Inc. [Commercial]
- http://www.openaccesssoftware.com/products/openaccess/jdbc_overview.asp

Dharma JDBC SDK
- A rapid to implement SDK to provide high-end SQL functionality and performance to proprietary or legacy data source.
- http://dharma.com/Dharma_jdbcsdk.shtml

DataDirect Connect JDBC Drivers
- Type 4 JDBC drivers for major databases (DB2, Informix, MS SQL Server, Oracle, Sybase). [Commercial]
- http://www.datadirect.com/products/jdbc/

StelsCSV
- A JDBC driver that allows performing SQL statements and other JDBC operations upon text files (comma separated, tab-separated, fixed length).
- http://www.csv-jdbc.com

VJDBC (Virtual JDBC)
- A JDBC type 3 driver which provides efficient tunneling of JDBC commands/results over different communication protocols (i. e. RMI or HTTP) [Opensource, LGPL]
- http://vjdbc.sourceforge.net/

JNetDirect JDBC Drivers
- Providing a broad range of SUN certified, high performance, full featured and scalable JDBC solutions for Java database connectivity applications. [Commercial]
- http://www.jnetdirect.com/

Duality
- A type 3 JDBC driver which add proxy functionality to any other JDBC driver, enabling completely closed firewalls. [Shareware]
- http://www.linus.no/jdbcproxy.html

JTurbo
- Type 4 driver for MS SQL Server. [Commercial]
- http://www.newatlanta.com/products/jturbo/index.jsp

twz1jdbcForMysql (aka tjFM)
- Type 4 JDBC driver for MySQL (not maintained for a long time). [Open Source, LGPL]
- http://tjfm.sourceforge.net/

jTDS JDBC Driver
- A 100% pure Java (type 4) JDBC 3.0 driver for Microsoft SQL Server and Sybase. [Open Source, LGPL]
- http://jtds.sourceforge.net/

PostgreSQL JDBC Driver
- Type 4 JDBC driver for PostgreSQL. [Open Source, Other]
- http://jdbc.postgresql.org/