Virtuino Modbus - Virtuino Modbus is an app that enables you to monitor or control the automation system by using IP protocol or Modbus TCI.
KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
WizardProg Mobile - WizardProg Mobile is an app that helps you to manage the programming operations for the TL866A/CS universal portable USB programmer and to program a wide range of testing SRAM chips, microcontrollers internal EEPROM, and logic chips.
Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
Calculatoredge - calculators, engineering, mechanical, electrical, electronics, design, construction, manufacturing, consultant, layout, software, chemical, plastic, polymers
QUCS - Qucs, briefly for Quite Universal Circuit Simulator, is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit.