  We describe the qFunctions Mathematica package for $q$-series and partition
theory applications. This package includes both experimental and symbolic
tools. The experimental set of elements includes guessers for $q$-shift
equations and recurrences for given $q$-series and fitting/finding explicit
expressions for sequences of polynomials. This package can symbolically handle
formal manipulations on $q$-differential, $q$-shift equations and recurrences,
such as switching between these forms, finding the greatest common divisor of
recurrences, and formal substitutions. Here, we also extend the classical
method of the weighted words approach. Moreover, qFunctions has implementations
that automate the recurrence system creation of the weighted words approach as
well as a scheme on cylindric partitions.

Symbolic Computation;Combinatorics;Number Theory