If you're looking for a service to find and share prompts for ChatGPT and Gemini, PromptDrive is a good option. It's a full-featured prompt management system that lets you create, share and refine prompts. The service has chat AI collaboration, organization and sharing abilities, with unique URLs for each prompt. It also has a Chrome extension for quick access in supported AI tools, so it's good for individuals and teams.
Another option is Snack Prompt, a community-driven site where you can find, upvote and share prompts that work well with ChatGPT and Gemini. The site lets you connect with people who have learned how to craft good prompts, so you can get good results from AI every time.