Synergration

OpenSync
Trial versionSynchronize and transfer QuickBooks data to and from an external MS Access, SQL, or Oracle database.
Windows
xBooks
Trial versionQuickBooks Excel Integration Streamlined with XBooks
Windows
AccessBooks RealTime
Trial versionQuickBooks Data Export for Scalable Database Solutions
Windows
CoreObjX
Trial versionStreamline QuickBooks API Integration with CoreObjX Developer Tools
Windows