Multisim Alternatives

LTspice® is a high performance SPICE simulation software, schematic capture and waveform viewer with enhancements and models for easing the simulation of analog circuits.

A Cross Platform and Open Source Electronics Design Automation Suite

Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...

OrCAD PSpice technology provides the best, high-performance circuit simulation to analyze and refine your circuits, components, and parameters before committing to layout and fabrication

EasyEDA - Web-based EDA suite; runs in browser.

Proteus - Proteus is a great electrical suite for circuit simulation purposes. You can simulate a single processor or multiple ones at the same time. The application is a great alternative for Virtual System Modelling.

Qucs, briefly for Quite Universal Circuit Simulator, is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit.

Fritzing is an open-source initiative to support designers, artists, researchers and hobbyists to...

Open Source

Ngspice is a mixed-level/mixed-signal circuit simulator.

PCB Design Software

CircuitLogix electronics lab simulation provides fast, powerful schematic design and simulation in one complete program.

LibrePCB is a free EDA software to develop printed circuit boards.

Open Source

Create Simulate and Design Circuits and their PCB layout with TINACloud