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StreamMusic vs Plexamp: catalog facts
StreamMusic	Plexamp
Free Downloadable from the official site and the App Store; the app is not open source.	Freemium Free to use, with some features reserved for paid Plex Pass subscribers.
Windows, macOS, Android, iOS	Windows, macOS, Linux, Android, iOS
One client for Subsonic, Navidrome, Jellyfin, Emby, Plex and Audio Station Runs on Android, iOS, macOS and Windows	Dedicated music player built around a Plex library Available on desktop and mobile platforms
Not open source No Linux version	Depends on a Plex Media Server holding your music Some features require a paid Plex Pass
Downloadable app	Downloadable app
Closed 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 October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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