Hello there!

I'm a composer. I'm using Avid Sibelius (music scoring software) for writing down all my music. Recently I've got a demo-version of plugin "Graphical MIDI Tools", created exclusively for Sibelius. Is there any freeware analogues with similar functionality (the price for the Graphical MIDI Tools a bit much for me, unfortunately)?

Sibelius plugins is written in Manuscript, and I'm looking for "Piano Roll"-type of plugin with availability to edit MIDI CC's of each note inside score.