AVRDUDESS is a GUI for AVRDUDE, a tool for programming Atmel microcontrollers.Some key features: Supports all programmers and MCUs that AVRDUDE supports
Energia is a rapid prototyping platform for the Texas Instruments MCU Launchpad. Energia is based on Wiring and Arduino and uses the Processing IDE.
Modkit is an in-browser graphical programming environment for microcontrollers.
BitBurner AVR Programmer, a full and complete AVRdude GUI for Windows.
AursunRobotics is arduino campatible software which capable to program board without need of programming and makes advanced projects for student and hobbyist.
The Arduino extension makes it easy to code, build, deploy and debug your Arduino sketches in Visual Studio Code with IntelliSense, highlighting, board & library manager, and serial monitor.
A Scratch-based application with which you can program a wide variety of devices (Arduino, BBC micro:bit, STM32, SAMD51, ESP32, NRF5 ... ).
Visuino is the latest innovative software from Mitov Software. A visual programming environment allowing you to program your Arduino boards.
A visual programming language for microcontrollers. Like code, but better.
Simulator for Arduino is the most full featured Arduino Simulator available at the present time.