Media
Jellyfin
Fully open-source media server for movies, TV, music, and live TV with no paywalled features.
Brax recommends
Self-hosted media library for households that want Plex-style streaming without a commercial account.
Jellyfin forked from Emby to stay free software and runs on almost anything, from a Raspberry Pi to a NAS. Transcoding, hardware acceleration, and remote streaming work well; polish trails Plex in a few edge cases.