I'm developing Drumlabooh (https://psemiletov.github.io/drumlabooh/ (https://psemiletov.github.io/drumlabooh/)), the free, open source VSTi/LV2 for Linux and Windows. It is a rather fresh project that I started when feeling the lack of (suitable for me) drum machines at Linux. Drumlabooh is compatible with Hydrogen drumkits, and also with SFZ and has its own, very simple, drumkit format. The main idea is "just plug and play" to the DAW's track.
At this point Drumlabooh supports up to 36 instruments per kit, multi-layered samples, multi-out, has built-in FX section, etc. The main question is the DAW compatibility, here is even a dedicated Wiki page (https://github.com/psemiletov/drumlabooh/wiki/DAW-Compatibility). I can test Drumlabooh at Linux with Ardour, Reaper, Muse, Qtractor. At Windows I tested it only on Reaper.
It is important to know how Drumlabooh works under Cubase, Nuendo, any.
Drumlabooh Windows installer is based on NSIS and builded via Github action runner, it just installs to VST3 default location (and set up uninstaller). In the future I'll NSIS script more flexible, but for now it just works.
I will be glad for the feedback
P.S. Also I'm interest in support of other open sample/drumkit formats.