OscillaStation

From OscillaSoft:

Music Workshop is a multi-track sequencer with synthesizer, sampler and wave editor. Synthesizer supports internal and VST plugins. Complete modular synthesizer with one sample feedback included which can be used to make VST plugins. Sampler has multi-layered instruments similar to SF2 format, and can import SF2 files. Synth loads +50 native plugins ranging from standard effects like delay and chorus to big analog style synths and FM synths. Most native plugin synths include 7 out effects, 2 mod matrixes and also 2 arpeggiators or step sequencers.