Thank you very much for your interest in this project. OpenAI has now released the macOS version of the application, and a Windows version will be available later (Introducing GPT-4o and more tools to ChatGPT free users). If you prefer the official application, you can stay updated with the latest information from OpenAI.
About Integrating ChatGPT into your browser deeply, everything you need is here chrome-extension safari-extension firefox-addon firefox-extension browser-extension edge-extension chatgpt Readme MIT license
Every front-end GUI client for ChatGPT API Similar to Every Proximity Chat App, I made this list to keep track of every graphical user interface alternative to access the API for ChatGPT, Claude, and other LLMs. I wrote a quick guide on how to configure this for non-technical users: How I pay $1.79 instead of $20/mo for AI using a 5min hack