software
| Software | Features & Use Case | Free Version Available? |
|---|---|---|
| LTspice | Powerful SPICE simulator for analog circuits (by Analog Devices) | ✅ Free |
| KiCad | Open-source PCB design and SPICE simulation | ✅ Free |
| Altium Designer | Industry-standard PCB design and simulation | ❌ Paid (Trial available) |
| Proteus | Combines schematic capture, PCB design, and simulation | ❌ Paid (Demo available) |
| EasyEDA | Online-based PCB design and simulation | ✅ Free |
| Multisim | Advanced SPICE simulation with real-time analysis | ❌ Paid (Free for students) |
| OrCAD PSpice | High-end analog and mixed-signal simulation | ❌ Paid (Lite version available) |
| Fusion 360 (Eagle) | PCB design with simulation tools (by Autodesk) | ✅ Free for hobbyists |
ngspice
https://ngspice.sourceforge.io/ngspice-eeschema.html#BipAmp
PSpice
- PSpice (OrCAD Capture).
LTspice
online simulation
https://www.circuitlab.com/editor/#?id=7pq5wm&from=homepage
support: amplifier-dat, NE555-dat, comparator-dat, logic-gate-dat, ...