BASCOM AVR is a very powerful compiler for AVR micro controllers.
New Wave Concepts Limited
Combines circuit design, simulation and CAD manufacture to realize projects.
University of Colorado
Build circuits with resistors, light bulbs, batteries, and switches.
Circuit Magic is an electrical circuits simulation program.
the Qucs team
Quite Universal Circuit Simulator is an integrated circuit simulator.
Simutech Multimedia Inc.
Train yourself to troubleshoot electrical circuits safely with this program.
Advanced Systems for Power Engineering, Inc. (ASPEN)
A PC-based short circuit and relay coordination program for relay engineers.
EASY-SOFT is a graphic editor for representation of the circuit diagram.
The RUPLAN system enables editing of circuit diagram.
Festo Didactic GmbH & Co. KG
FluidSIM 5 is a circuit diagram design and simulation program.
Richard P. Andresen
Use analog circuit simulation for the professional circuit designer.
Air circuit breakers can be used both as circuit-breakers for general protection.
WinAVR includes avr-gcc , avrdude (programmer), avr-gdb (debugger), and more!
mikroC PRO for AVR is an ANSI C compiler for Atmel AVR microcontrollers.
AVR Toolchain is a program used to create applications for AVR microcontrollers.
ImageCraft Creations Inc.
ICCV8 for AVR is a complete IDE for programming AVR series microntrollers.