Ngspice
Ngspice is an open-source, mixed-level/mixed-signal circuit simulator used for electronic circuit design and analysis. It is based on the SPICE (Simulation Program with Integrated Circuit Emphasis) engine and supports analog, digital, and mixed-signal simulations. It is widely used in academia and industry for tasks like circuit verification, performance analysis, and educational purposes.
Developers should learn Ngspice when working on hardware design, embedded systems, or electronic engineering projects that require circuit simulation. It is particularly useful for simulating analog circuits, verifying IC designs, and analyzing signal integrity in mixed-signal systems. For example, it can be used to model amplifiers, filters, or power supplies before physical prototyping.