Packages suggested by CTVsuggest

I tried out the 'CTVsuggest' package, as requested by Achim Zeileis.
For the NumericalNumerics task view, it suggested the following packages:

CTVsuggest(taskview = "NumericalMathematics", n = 20)

jordan          0.9995356        pbdSLAP         0.9757127
RationalMatrix  0.9987952        vecsets         0.9717508
EigenR          0.9987411        FunWithNumbers  0.9669418
weyl            0.9972708        BLPestimatoR    0.9593805
gmpoly          0.9933795        maotai          0.9571226
Rfractran       0.9926443        mvmesh          0.9518288
qspray          0.9915961        spray           0.9497771
go2bigq         0.9838838        inflection      0.9467829
contFracR       0.9811039        Ryacas0         0.9463418
SparseChol      0.9780122        ecdfHT          0.9338194

I don't want to blow up the task view, but I think we have to check these
packages. For instance, Ryacas and ecdfHT are not right in this context
(Ryacas replaces Ryacas0) , but spray and jordan authored by Robin
and will be appropriate for inclusion.

Can each of us go through this list and propose those packages that
he thinks should be added?

Start by reviewing the CTVsuggest output in the issue and comparing each package with the NumericalMathematics task view. Check whether each suggestion belongs in this context, noting the stated Ryacas/Ryacas0 distinction, and finish by proposing a justified set of packages for inclusion.