Koel vs Ultrasonic

A side-by-side comparison of two self-hosted media servers options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
FeatureKoelUltrasonic
CategoryMedia ServersMedia Servers
LicenseMITGPL-3.0
LanguagePHPKotlin
Setup difficultyMediumEasy
Min. RAM512 MB128 MB
Deploymentdocker, bare-metalbinary, source
GitHub stars★ 17,208★ 500
First released20162019
ReplacesSpotifySpotify

Why pick each one

Choose Koel if…

  • Beautiful interface
  • Active community
Koel details

Choose Ultrasonic if…

  • Stable and mature
  • Privacy respecting
Ultrasonic details

Frequently asked questions

Is Koel or Ultrasonic better?

Neither is universally better. Koel has the larger community, while Ultrasonic is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.

Are Koel and Ultrasonic free and open-source?

Yes. Koel is licensed under MIT and Ultrasonic under GPL-3.0. Both can be self-hosted at no software cost.

Can I run Koel and Ultrasonic with Docker?

Koel: yes. Ultrasonic: check the project docs for container support.

Related comparisons