- Cadence Spectre vs HSPICE: In many analog IC organizations, simulator selection is driven by flow standardization (Virtuoso + ADE + PDK enablement + scripts). HSPICE is often used as a signoff reference, while Spectre is widely used for day-to-day analog design and signoff in Cadence-centric environments.
- Siemens/Mentor Eldo vs HSPICE: Eldo is a long-standing SPICE simulator; selection frequently depends on existing Siemens EDA footprint, procurement decisions, and foundry enablement.
- Open-source (ngspice/Xyce) vs HSPICE: Open-source tools are useful for early exploration, education, and some research, but generally lack the vendor-backed support and foundry signoff status expected for tapeout.