Explorer - AI Powered Discovery & Learning Engine
AI Text Generator (free, no sign-up, unlimited)
Poe
You.com | AI for workplace productivity
ChatHub - GPT-4o, Claude 3.5, Gemini 1.5 side by side
ChatGPT
Otio - Your AI Research & Writing Partner
NotebookLM do AI research
Perplexity
Claude
ChatGPT - text / image