Hardware as fast as software
Libre and open source desktop application to create diagrams
Qucs-S is a circuit simulation program with Qt-based GUI
Unity3D System Design Architecture
Schematic circuit editor for VLSI and Mixed mode circuit simulation.
DSpice: Design and Simulation of Circuits using Spice
A circuit simulator with graphical user interface (GUI)
Educational digital logic circuit simulator
An USB programmer for PIC, dsPIC, AVR, serial memories
Qt based Veroboard, Perfboard, and PCB layout and routing application
PyAMS (Python for Analog and Mixed Signals) CAD approach
Program for molecular graphics
A C++ library for AVR and NodeMCU
A Cross Platform and Open Source Electronics Design Automation Suite
USB loadcell meter using an MCP2210 chip to interface with an HX711
The secret science
Community driven PCB Layout and Schematic capture software
Analog \ digital circuit design and simulation source code
ESP32 Arduino Based Reflow Oven Controller Schematics and Firmware
Set app volumes with real sliders! Arduino project to build hardware
AVR simulator IDE