With 4,300+ GitHub stars and native mobile apps on three platforms, Black Candy transforms any VPS into a private Spotify-style streaming service for your personal music collection. The Ruby on Rails 7 backend with Hotwire Turbo and Stimulus delivers a responsive single-page-feeling web player supporting album browsing, artist views, playlists, favorites, and queue management without full page reloads. Point it at a media directory containing MP3, FLAC, OGG, AAC, or WAV files and Black Candy indexes metadata, fetches album artwork from Discogs API, and begins streaming immediately with on-the-fly transcoding that adapts bitrate to client bandwidth. Multi-user support gives each account independent playlists, favorites, and listening history while sharing the same music library — ideal for families or shared households. Native iOS, Android, and F-Droid apps maintained as separate repositories provide offline caching, background playback, and server discovery for mobile listening. The admin panel manages user accounts, configures media paths, and sets Discogs API tokens for automatic cover art retrieval. Deployment requires one Docker command — `docker run -p 80:80 ghcr.io/blackcandy-org/blackcandy:latest` — with persistent storage volumes for the SQLite database and media directory. For larger deployments, switch to PostgreSQL via environment variables with dedicated database URLs for ActionCable, SolidQueue, and SolidCache. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Streaming personal music collections with neural discovery and intelligent playlist curation is what Kima accomplishes as a modern self-hosted audio server that replaces Spotify and Apple Music. Listeners organize their FLAC, MP3, and AAC audio files into responsive grid layouts that scale up to eight columns on ultra-wide displays while automatically fetching album covers, artist biographies, and synchronized line-by-line lyrics. The built-in Vibe System utilizes CLAP neural network audio embeddings to map an entire music collection across two-dimensional clusters and three-dimensional interactive galaxy views, enabling users to explore acoustic relationships or queue smooth sonic paths between distant tracks. Music fans can import playlists directly from Spotify, Deezer, and YouTube using deterministic ISRC matching, while automated Made For You mixes generate era-specific playlists, workout stations, and discovery queues based on individual listening habits. Integrated podcast search pulls subscriptions from iTunes with automatic episode tracking across devices, while native Audiobookshelf connectors synchronize spoken-word chapter positions and playback progress directly into the unified web player. OpenSubsonic API endpoints allow mobile users to stream libraries through native clients like Symfonium and DSub using scoped authentication tokens, while administrators manage multi-user accounts with time-based two-factor authentication. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPL-3.0 licensed.