PromptMage is a Python framework that aims to streamline the development of complex, multi-step applications using large language models (LLMs). It offers a variety of features including a prompt playground, built-in version control, and an auto-generated API. Ideal for both small teams and large enterprises, PromptMage improves productivity and facilitates effective prompt testing and development. It can be deployed locally or on a server, making it accessible and manageable for diverse users.