Directory Opus supports third-party developers with an open SDK for various features of the software.

GPSoftware provides such information to encourage third-parties to develop and release plug-ins to add new functionality to Directory Opus. This information is provided totally free and GP Software makes no claims on the copyright of any derived materials developed using this information by any third-party for products developed from this information which support and enhance Directory Opus.

The SDK and sample code is available from the main download page.