PCB & electronics

Schematic capture, PCB layout and circuit simulation.

KiCad

PCB & electronics

Open-source electronics design automation suite

Stars: 3k
Licence: GPL-3.0
Status: Open source

Alternative to Altium Designer, Eagle

LibrePCB

PCB & electronics

Beginner-friendly open-source EDA suite

Stars: 3k
Licence: GPL-3.0
Status: Open source

Alternative to Altium Designer, Eagle

Q

Qucs-S

PCB & electronics

Circuit simulator GUI using ngspice, Xyce and other engines

Stars: 1.4k
Licence: GPL-2.0
Status: Open source

Alternative to OrCAD

Horizon EDA

PCB & electronics

Modern EDA package for schematics and PCB layout

Stars: 1.3k
Licence: GPL-3.0
Status: Open source

Alternative to Altium Designer, Eagle

EasyEDA

PCB & electronics

Free browser-based schematic and PCB design

Licence: Proprietary
Status: Free (proprietary)

Alternative to Altium Designer, Eagle

N

ngspice

PCB & electronics

Open-source mixed-signal SPICE circuit simulator

Licence: BSD-3-Clause
Status: Open source

Alternative to OrCAD