Atua is a web app that unlocks the power of ChatGPT through a single shortcut key on any Mac app. This tool streamlines AI assistance without the need for context switching. Users can select text from any window, trigger the shortcut key, and let Atua take over, offering text processing, grammar correction, and content expansion features. Customizable commands and hotkeys allow tailored usage, while conversation history saving enhances user experience. Atua requires an OpenAI API key and Mac OSXor higher, with future plans for Windows and Linux support. Data is stored locally for user privacy, making it a versatile and efficient tool for enhancing productivity and task management.