This SmartDeviceLink White Paper provides a technical overview of SDL at its current state. The paper covers various components of the SDL project, as well as a definitions for commonly used SDL terminology.
Manticore gives you access to a dedicated instance of SDL Core through your browser. With it, you can test how your app reacts to real-world vehicle events, on-screen interactions, and voice recognition—just like it would in a vehicle.
SDL iOS Relay is a tool for developers building applications that utilize SmartDeviceLink for connecting their apps to SDL Enabled hardware via USB. This tool allows those developers to test their applications over a TCP/IP connection, allowing developers to easily see debug logs to make development faster and easier.
The SmartDeviceLink RPC Builder is designed to allow free testing of the SDL Interface during development. It will allow sending all Remote Procedure Calls (RPCs) to SDL Core. The user has to ensure the right sequence of commands to be send. (E.g. a performInteraction cannot be successful if the user did not send a createInteractionChoiceSet before. Please familiarize yourself with the SDL App Developer documentation.)