What is civitai
"Civitai is a platform for Stable Diffusion AI Art models"
Actually, CivitAI is a place for a lot of different AI-Generative stuff.
1. Stable Diffusion models
2. Different LoRAs / hypernetworks / textural inversions (types of "mods" for models, if you want)
3. Different workflows and nodes for (Un)ComfyUI
4. Different soft for making life eaiser
and much more.
Also, CivitAI is a pretty good place for sharing your art. If you know how to do it, of course.