Microcontroller

BitBurner AVR Programmer, a full and complete AVRdude GUI for Windows.

Electric UI equips engineers, researchers, and enthusiasts with software to build cross-platform user interfaces for realtime hardware visualisation and control.

The MPLAB X IDE is the new graphical, integrated debugging tool set for all of Microchip’s more than 800 8-bit, 16-bit and 32-bit MCUs and digital signal controllers, and memory devices. It includes a feature-rich editor, source-level debugger, project manager, software...

A virtual simulation environment for electronic circuits with support of digital and analog devices. It also provides virtual instruments and virtual debugging tools.

SimulIDE is a simple real time electronic circuit simulator. It's intended for general purpose electronics and microcontroller simulation, supporting PIC and AVR. PIC simulation is provided by gpsim and avr simulation by simavr.