A simple, completely client-side web UI for ChatGPT. All configuration and chat history is stored in the browser's local storage. You'll need to BYO API key, which you can get here.
https://benrhughes.github.io/chat-demo/
You can clone the demo repo if you want the latest built version.
If you'd like to build it yourself:
git clone https://github.com/benrhughes/chat.git
cd chat
npm install
npm run build
Serve the contents of the dist folder.