A set of utility programs, subroutines or similar software(noun)
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Use "toolset" in a sentence
"It's going to be a major step forward; not only for the PS3 but for gaming, because gamers never had the chance to create levels with this kind of toolset before."
""Critically, it also includes a full editing, colour correction, effects, compositing and titling toolset - in fact, every finishing tool you need in a single system."
"But this time there's more you can do yourself including playing with artificial intelligence, making intro scenes, music and miniature arcade games, much of which would have been impossible with the trickier and narrower toolset of the original."