PICSimLab is a realtime emulator for PIC, Arduino, STM32, ESP32, ...
PC based Oscilloscope and Spectrum analyzer using sound card
Kactus2 is a graphical EDA tool based on the IP-XACT standard.
IEC 104 RTU Server Client Simulator Source Code Library Win Linux
A free, open-source electronics calculator suite for Linux
Real Time Electronic Circuit Simulator.
Optimer: a SPICE base electrical/ electronic circuit optimization tool
RxCalc is a calculator for the analysis of multi-stage receiver.
Eclipse-based IDE for design verification tasks
SPICE netlist visualizer
Electronic design and programming tools suite like Eagle, MpLab
Powerfull pre-processor
A graphical Finite State Machine (FSM) designer.
is a Qt program to generate SMD chip shooter code
Electric power system transient simulator