relative-microtime
Get the number of microseconds elapsed since January 1, 1970 00:00:00 UTC without fear of clock drift
matrix-utilities
Tiny, high performance utilities for performing 2/3D matrix calculations. Full unit test coverage, compatible with Node/CommonJS, AMD, and browser globals.
@justkd/roll
Class representing a pseudorandom number manager. Includes Mersenne Twister uniform distribution, Box Mueller gaussian distribution, n-sided die rolling, history of variable max size, elementary statistics, and scale/clip/round convenience functions.