Does anyone have a marked preference from their Maths departments over which maths tools are installed/used? I know there are a whole range out there, but the same names do crop up... I guess that it's going to vary by dept, but this would help us (!) make a decision on which to support... obviously each software house would claim to be the best solution, but I'm very interested in OSS solutions in particular.

Any information in addition - particularly if in 'Other', would be very well received.