KMix

What KMix is

KMix is a Linux application for controlling sound card volume and mixing sound channels. It supports several audio platforms and drivers. When both ALSA and Open Sound System drivers are installed, KMix uses ALSA. For remote control and scripting, it communicates through D-Bus, which can be used to retrieve and change volume levels. Linux users can install KMix through Discover, another AppStream application store, or a distribution package manager. KMix is free and open-source software under the GPL-2.0+ license, and its Free plan is listed as free. KDE provides a handbook and forum for help, a bug reporting link, and access to the source code. KDE describes itself as an international community that builds and distributes free, open-source software, and says anyone can use its software for free. KDE also says its software contains no ads or spyware and has no subscription services. The KMix page lists version 26.08.1 dated 2026-09-10 as its latest release shown.

Who it suits

KMix suits Linux users who want to change sound card volume or control sound channels. Its D-Bus support may also suit users who want to script volume changes or control the mixer remotely.

Getting started

1. Open the KMix page on KDE's website.
2. Install it on Linux through Discover or another AppStream application store.
3. Alternatively, install it through your Linux distribution's package manager.
4. Consult the KMix handbook or forum for help.

Verdict

Choose KMix if you use Linux and want a free, open-source sound channel mixer with D-Bus control. Look elsewhere if you need a platform other than Linux.