So enough of this sales pitch. Here is BabyDrummer, a free pattern drum sequencer designed with ease of use, efficiency and aesthetics in mind. It has 128 patterns, each having 16 drum lanes and 16 steps. The play sequence can be controlled by MIDI. The advanced controls include swing, lane shift (slide), pattern chaining, polyrhythm handling, hit probability and repeats.
See the details, download the VST