With this software you configure a music engine adjust its settings
and makes of your soundcard or any MIDI synth a powerfull music
machine, algorithmically generate music for arpeggios, ambiental sounds
etc.. it is Freeware

• A73 Piano Station 1.1.0
  Turn your PC into a fun to play virtual piano, synth, or band. Play piano or over 100 other instruments, from guitar to ocarina, from drums to synthesizer sounds. This virtual...

• Space Synthesizer 2.0.2
  The Space Synth is a polyphonic VST instrument plugin, with an ambient sound

• Space Synthesizer Mac 2.0.2
  The Space Synth is a polyphonic AU instrument plugin, with an ambient sound. It is suitable for ambient music, space music, ambient techno and electronic music in general. The plugin has a unique sound, which makes it very suitable for the musician...

• Guitar Arpeggio Arsenal 3.0
  Included in this exclusive Musician's Expansion Pack Demo: A Small Sample of GuitarArpeggio Patterns in Tablature Notation (the full version contains over 500 patterns)

• Software Midi Keyboard 1.8
  Software Midi Keyboard it's great midi piano compatible with all sequencers, soundcards, and software synths, for Windows95/98/ME/XP. You can play on your computer keyboard and mouse, as on midi keyboard. Program compatible with automated user-defined chords. Program has two midi output device, that allow you to record music in external midi...