Best Free Multisim Alternative in 2026

Multisim Live is shutting down on September 15, 2026. If you're looking for a free browser-based replacement that requires no download and no account, FreeCircuitSim is the answer.

Why Multisim Live Is Shutting Down

NI (National Instruments), now owned by Emerson, announced in late 2025 that Multisim Live — its browser-based circuit simulator — would be discontinued. The company is consolidating around the desktop version of Multisim (NI Circuit Design Suite) and ending support for the cloud platform.

This leaves millions of students, educators, and hobbyists who relied on the free browser-based simulator without a direct replacement from NI.

What You Need in a Multisim Alternative

A good Multisim replacement needs to offer:

• Real-time circuit simulation with animated current flow
• A broad component library covering basic to advanced components
• No download or installation requirement
• Free access without a subscription or account
• Works in a standard web browser
• Example circuits for learning and reference

FreeCircuitSim: The Best Free Browser Alternative

FreeCircuitSim is built on CircuitJS1, the open-source circuit simulator originally created by Paul Falstad. It runs entirely in your browser and offers genuine real-time SPICE-based simulation — the same core technology that made Multisim useful for students.

What It Includes

• Real-time animated simulation showing current flow with coloured indicators
• 50+ component types including resistors, capacitors, inductors, diodes, transistors, op-amps, logic gates, 555 timers, and transformers
• 360+ pre-built example circuits covering basics through advanced topics
• Built-in oscilloscope for waveform analysis
• AVR8 microcontroller simulation (Arduino-compatible)
• Export circuits as URLs to share or save your work
• Available in 14 languages

Head-to-Head Comparison

How to Migrate from Multisim Live

If you have circuits saved in Multisim Live, here is how to transition:

1. Export your circuits from Multisim Live before September 2026 using the export function in your account.
2. Open FreeCircuitSim — no account needed, just go to the homepage.
3. Recreate your circuits using the drag-and-drop interface. Most standard components are available.
4. Use the 360+ example circuits as starting points for common circuit types.
5. Save your work using File → Export as URL, which creates a shareable link containing your full circuit.

Is FreeCircuitSim Good for University Students?

Yes. FreeCircuitSim covers the full range of circuits typically covered in undergraduate electronics and electrical engineering courses, including:

• Basic passive circuits (RC, RL, RLC)
• Diode circuits and rectifiers
• Transistor amplifiers (BJT and MOSFET)
• Op-amp configurations (inverting, non-inverting, differential, integrator, differentiator)
• Digital logic (gates, flip-flops, counters, registers)
• Power electronics (buck, boost, flyback converters)
• Communications circuits (AM modulation, PLLs)
• 555 timer circuits

The real-time animated simulation is particularly useful for visualising concepts like charge buildup in capacitors, current direction in transistor circuits, and logic state transitions in digital circuits.

Limitations Compared to Multisim

To be honest about trade-offs:

• FreeCircuitSim uses idealised component models. For precision analog design requiring exact SPICE models for specific component part numbers, a desktop tool like LTspice may be more appropriate.
• Very large circuits with hundreds of components may run slowly in the browser compared to a native application.
• No built-in PCB layout tool (Multisim integrated with Ultiboard).

For the vast majority of students, educators, and hobbyists learning electronics, these limitations are not significant. The simulator handles everything you need for coursework and experimentation.