Reviewers:
Paul Burchard , Dept. of Math. , University of Utah
The reviews are personal opinions, and do not represent the official position of the reviewers' institutions. The inclusion of commercial products likewise does not represent any sort of endorsement by these institutions.
The following lists are particularly rich and/or well-maintained starting places for your search. In the typical fashion of the Web, they contain ever more pointers to ever more lists. However, they are not necessarily focussed on mathematics.