OpenAver

Free open-source desktop app that scrapes JAV metadata and generates NFO + cover art for Jellyfin, Emby & Kodi. No Docker, no CLI — one-click install on Windows & macOS. 8 built-in sources + optional Metatube federation (30+ providers), actress collections, cross-language tag aliases, and a REST API for AI agents. Maintained by slive777 on GitHub, where it has earned 207 stars from the community.

It's actively developed around fastapi, jav, metadata, and is a solid reference for anyone building with these tools.