PICSimLab is a realtime emulator for PIC, Arduino, STM32, ESP32, ...
HP-41cx Emulator
Industry standard communication with compliant image generators.
GNS3 Network simulator Live USB
Satellite Emulator
Emulate MODBUS industrial network with devices.
Old PCs' Emulator Series
Generate complex SNP models and heterogeneous datasets
Distributed Network emulation tool for high rate packet
1614P emulator
Labcoat; the VHDL graphic emulator.