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Polaris vs Black Candy: catalog facts
Polaris	Black Candy
Free Free and open source.	Free Free to use; the source code is published on GitHub.
Web, Self-hosted	Web, Self-hosted
Written in Rust Web client plus an API for other clients	Streams your own music library Web player in the browser
Music only, no video support Requires running your own server	Music only, no video You must host and maintain the server
Self-hosted	Self-hosted
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.