ChatGPT Anywhere is an AI assistant plugin that allows you to chat with ChatGPT 3.5/4 on any webpage. It offers chat folders, a customizable prompt library, and prompting tools. Users can create folders and subfolders to organize conversations, sync folders across multiple devices, and share folders and chat records with others. It also provides a library of 2600 curated prompts and templates that users can customize for their conversations. The plugin supports features like quick search of conversation history, pinning important folders and conversations, and sharing conversation links.