RooUnfold is a framework for unfolding (AKA "deconvolution" or "unsmearing").

It currently implements seven methods:
iterative ("Bayesian");
singular value decomposition (SVD, implemented in TSVDUnfold);
bin-by-bin (simple correction factors);
an interface to the TUnfold method
simple inversion of the response matrix without regularisation
iterative dynamically stabilized (IDS) unfolding
usage of gaussian processes (GP) for regularizing a kernel
Poisson unfolding, a simple likelihood unfolding