TOSCA, OPERA2d, and OPERA3d are tools proivded by
Vector Fields
for electromagnetic field calculations in magnet design.
We have at FNAL licences (and upgrade and maintenance) for
20 users, now configured as 5 simultaneous users on the Sun
and 15 hardware devices ("dongles") which plug in to a USB port
and enable use on a Windows PC.
Obtaining one of these dongles is done through the Computing
Division helpdesk.