They saw immediately that while vendor A might have a really nice analog simulation environment, vendor B had a much better PCB or silicon layout auto-router.
2.
All of the ICAP / 4 products incorporate the Intusoft IsSpice4 simulation engine, which is based on Berkeley SPICE 3 analog simulation with the Georgia Tech XSPICE event simulator model.
3.
Saber began as a single-kernel analog simulation technology which brought VHDL-AMS, Verilog-AMS, SPICE, and the Saber-MAST language into a single environment.