Welcome to the HotDocs Open SDK documentation. HotDocs Open SDK is a toolkit HotDocs provides to enable you to integrate your host applications with HotDocs functionality. Since the Open SDK is implemented in C#, any managed (.NET) application can implement the Open SDK to simplify communication with HotDocs Cloud Services and/or HotDocs Server. You can access the Open SDK, at https://github.com/HotDocsCorp/hotdocs-open-sdk.