- 数据库抽象层
- 针对各数据库系统对应的扩展
- CUBRID
- DB++
- dBase
- filePro
- Firebird/InterBase
- FrontBase
- IBM DB2— IBM DB2, Cloudscape and Apache Derby
- Informix
- Ingres— Ingres DBMS, EDBC, and Enterprise Access Gateways
- MaxDB
- Mongo— MongoDB 驱动（旧版）
- MongoDB— MongoDB driver
- mSQL
- Mssql— Microsoft SQL Server
- MySQL— MySQL Drivers and Plugins
- OCI8— Oracle OCI8
- Paradox— Paradox File Access
- PostgreSQL
- SQLite
- SQLite3
- SQLSRV— Microsoft SQL Server Driver for PHP
- Sybase
- tokyo_tyrant