| Tool | Features | Best for | |------|----------|----------| | (free, from Analog Devices) | Powerful SPICE simulator, no node limits | General analog simulation | | PSpice for TI (free, from Texas Instruments) | Limited version but excellent for TI components | Power electronics, TI designs | | KiCad (open source, free) | Includes ngspice integration, full PCB design | Complete electronics design workflow | | Micro-Cap 12 (free, as of 2019) | Former commercial tool, now freeware | Educational & professional use |