Jellyfin
Jellyfin is a free, open-source media server software that allows users to organize, stream, and manage personal media collections (such as videos, music, and photos) across devices. It provides a self-hosted alternative to commercial services like Plex or Emby, with features like transcoding, user management, and a web-based interface. The platform is built on .NET Core and supports various clients including web browsers, mobile apps, and smart TVs.
Developers should learn Jellyfin when building or maintaining self-hosted media solutions, as it offers full control over media libraries without subscription fees or vendor lock-in. It's particularly useful for projects involving home automation, media streaming apps, or privacy-focused applications where data ownership is critical. Use cases include setting up personal media servers, integrating with home networks, or developing custom clients for media playback.