# AquaLogic® Interaction Development Kit (IDK) 5.4 The AquaLogic Interaction Development Kit (IDK) enables Java and .NET developers to rapidly build, deliver, and improve user-centric composite applications through AquaLogic Interaction and AquaLogic Ensemble. The IDK provides interfaces for pagelets, portlets and integration web services - authentication and profile services, crawlers, and search services. To download the IDK, log on to the AquaLogic Interaction Support Center and navigate to Product Center > Utilities & Developer Tools.
## Getting Started The following documents provide installation information and guidance for planning your IDK deployment. Release Notes Installation Guide ## Development Tutorials The following documentation provides useful information for developers using the IDK. Introduction to AquaLogic User Interaction Development IDK Quickstart: Hello World Portlet (Java | .NET) Setting Up a Custom IDK Project (Java | .NET) | ## API Documentation API documentation is provided for both Java and .NET. Javadoc NDoc ## Resources and Sample Code The AquaLogic User Interaction Developer Center on dev2dev provides articles, blogs, discussions and sample code. AquaLogic User Interaction Developer Center ##