: A complete open-source suite for schematic capture and PCB design.
: National Instruments typically offers a 7-day or 30-day free trial of the full desktop software suite for evaluation purposes on the NI Multisim product page. Free Alternatives Multisim Free Download
: High-performance SPICE simulation, widely used in industry. : A complete open-source suite for schematic capture
: You can use the free, browser-based version at Multisim Live for basic circuit design and simulation. Multisim Free Download
: If you are a student, check your University's software portal or the NI Education page for discounted or institutionally-provided access.