OpenGPT is an AI tool that allows users to create ChatGPT applications quickly and easily. Users can choose from a variety of pre-built applications or create their own in a matter of seconds. The tool offers different categories of applications, such as productivity tools, copywriting assistants, lifestyle and entertainment, and code assistants. Users can select a desired application, share it, and run it immediately. OpenGPT also provides a way to track the usage of purchased license keys. Additionally, the tool offers a FAQ section where users can find answers to common questions. Overall, OpenGPT simplifies the process of creating and using ChatGPT applications, making it accessible to a wide range of users across various domains.