UplandToys has launched Midular, a collection of modular MIDI processing modules for Max for Live.
The modules can be chained together in a modular fashion to form any number of effect chains. Used in isolation, they can act as problem solvers, such as quantizing notes in real-time, repeating incoming notes, or sequencing incoming notes.
By chaining several modules together, one can create MIDI processing chains that can be used to support various forms of algorithmically aided composition.
See the Upland site for details or to download.