Some good modulation and support tools:
Intellijel Quad VCA
Mutable Instruments Shades
Mutable Instruments Kinks and Links
For modulation, I really like using Mutable Instruments Marbles and Acid Rain Labs Maestro. These give me tons of ways to split and generate patterns at various tempos and clock speeds and randomness as well. Pamela New Workout is a great clock module that also has euclidian pattern sequencer and logic options plus modulation tools.