MyGPT is a ChatGPT API frontend tool that provides a built-in prompt library and chat history features, making it easier for users to handle daily conversations and prompt management in a lighter-weight way.

TypingMind is an enhanced client for ChatGPT, offering chat history search, folder management, a prompt library, and integration capabilities, and supports running in the browser using your own API key.

ListGPT is a Chrome extension for saving, organizing, and sharing ChatGPT conversations. It supports building a prompt library and exporting messages as text files for later reference and reuse.