Energy is a new Step Sequencer and automation analogue type synth Windows VSTi from the developers of Synthetic & Massiva, available in Free and Pro versions you can download a beta to try out:

• Low-band-highpass filter with resonance and distortion.
• 1 sequence with pattern and automation per plug-in instance.
• Sequence slaves to tempo in host.
• Sequence automatically transposes to MIDI note(s) played.
• Sample accurate filter automation with tempo sync.
• Each step in a pattern includes note offset from root, velocity, volume/filter decay times and glide times.
• 2 oscillators with ring modulation, phase, detune and octave.
• Playback mode: Mono, poly and sync (poly).
• LFO to filter, phase and pan.
• Stereo BPM delay.
• Decay and glide times are relative to tempo like "time stretch".
• Everything is saved with song in host
  
  
• PRO only: Unlimited sequences with patterns and automations, switchable by MIDI note or control change (CC).
• PRO only: Step record patterns with MIDI keyboard or Joystick.
• PRO only: Save to wav.
• PRO only: Import/export energy packs (sound and sequences).