Scoundrel is a stand-alone drum machine. It has several different drum voices, with tuning options for each.
Scoundrel is also open-source. It's written in Java and the sources are available on bitbucket. It's powered by the Frequencies audio engine, which powers all Bandit-works synthesizers.
To run it, you have a few options. You can build it from source, or launch it straight from an executable jar. Both of these require Java 16 to be installed. In the future there will be installers, but jpackage doesn't work for me at the moment, so maybe later...
While it is possible for Scoundrel to run headless, it doesn't by default.
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