SPICE is a circuit simulation software package freely available as source code.  Unlike the PSpice version offered for download on this site, SPICE has no node or active device count limitation.  This makes it ideal for verifying larger designs that cannot be simulated under the PSpice evaluation version.  SPICE is also available in ET 312 on the Redhat Linux computers.  The source given in the file below is compatible with almost all machines (check the conf directory for a full listing). 

• Download SPICE source code (Winzip or tar and gzip required)

This file contains all of the 'C' code for SPICE that must be compiled before usage.  See the readme file for information on how to compile the source code under different operating systems.