In addition to the previous answers, there is a package that computes Fourier transforms for solvable non-commutative groups based on this algorithm. The software has a tool to decompose Fourier transforms into simpler matrices. Such decomposition is essentially an efficient quantum circuit to implement a non-abelian quantum Fourier transform.
Although it is not a general-purpose package it is a nice tool if you work with this class of (rather complicated) unitaries. In this context there are no alternatives that I know.
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