Awesome ChatGPT Prompts (prompts.chat) — Agent and System Prompts (9.5/10)

Fatih Kadir Akın's f/awesome-chatgpt-prompts (now also prompts.chat) is the most-starred prompt collection on GitHub. It ships thousands of curated role prompts as a single prompts.csv plus a browsable web interface, with mirrors as a Hugging Face dataset, a Claude Code plugin, and an MCP server.