FL Studio, Ableton, and many VST. Yes, a know about Ardour, many LV2 plugins, and I tried it, and in somewhere moment, me liked it more, then proprietary analog. Some plugins is awesome, DrumGizmo is very well, Vitalium and helm too have good sound, and many another software is good, but for easy, fast, and really quality sound it easier make in proprietary analogs. It ones cause, why I have windows in dualboot (and yes, in Wine I haved large latency and another problems).
P.S But sometimes I still working on my music projects in GNU/Linux.
It was awesome!
Even my little works is survived.
Esperanto
RMS
Gachi Power xD
Thanks everybody!