The Space Toad MIDI Sequencer is a VST Host/multitrack sequencer for Windows 2000/XP/Vista, now available in a free beta version.
Most important features are:
Audio engine with ultra-low latency mode
Support for 16 VST Instrument channels
Support for 6 VST Effect channels
VST Parameter recording
Audio Mixer with switchable internal routing
Four MIDI outputs
64 tracks with 8 recordable real-time parameters
Mute & Solo options
Standard MIDI File Import & Export
Time Signature changes are fully supported
Real-time Tempo Recording
Support for MIDI clips
Matrix Editor with self-adjusting zoom levels
List Editor
Editing of Lyrics, Text & SysEx Events
Virtual Keyboard
Graphical editing of controller events
Step recording
Grid Quantize & Groove Quantize functions
Logical Filter, Transform & Interpolation
Automatic Mixdown / Remix feature.