I found the best extensions and web pages with OpenAI ChatGPT:
ChatGPT Chrome Extension: Access ChatGPT anywhere on the web
ChatGPT for Google: Show ChatGPT responses alongside Google Search results
Promptheus: Have conversations with ChatGPT using your voice
Merlin: Click Ctrl + G to use ChatGPT on any website
God In A Box: Chat with ChatGPT directly on Whatsapp
YouTube Summarizer with ChatGPT: Exactly what it says!