ACME Magnetics
Intusoft and ACME Magnetics USA partnered in 2008 to provide a host of ACME ferrite core materials to Intusoft’s Magnetics Designer product. More on this collaboration can be found at:

http://www.intusoft.com/pr/ACMEMagnetics.htm
or http://www.acmemagusa.com/pages/partners.htm

SiSoft
Intusoft and Signal Integrity Software partnered in 2004. Intusoft’s IsSpice4 SPICE engine is used under the hood of SiSoft’s Quantum-SI signal integrity analysis tools. More about this collaboration can be found at: http://www.intusoft.com/sisoftoemdetails.htm

ON Semiconductor
Intusoft and ON Semiconductor partnered in 2002. The collaboration provides 30 SMPS templates with Intusoft's ICAP/4 analog and mixed-signal simulation offerings. The FREE software also includes "Magnetics Designer" for designing complex SPICE magnetic models. More on this collaboration can be found at: http://www.intusoft.com/ONSemiconductor.htm