Users interested in Code vision avr 2.5.3 free download generally download:
Access a development environment and generate automatic programs for the 8-bit Atmel AVR8, AVR8X, and XMEGA chips. Work with such components as a compiler and assembler for AVR, a generator of the initial code, syntax highlighting, etc. The output formats include HEX, BIN, ROM, COFF, and OBJ.
AVR Studio is a great tool for developing applications for Atmel AVR microcontrollers. It has a lot of useful features, such as access to 400 example projects, user guides and datasheets, the Cycle Correct simulator, the ability to write code for several apps in split windows, and integration with Microsoft Visual Studio. I highly recommend it for anyone looking to develop applications for Atmel AVR microcontrollers.