ftp://ftp.efo.ru/pub/atmel/_C51_and_AVR_with_USB/tools/  direct

[DIR]utilities/  direct  8389+ twin directories
[DIR]programmers/  direct  162 twin directories
[DIR]flip/  direct  1200+ twin directories
[DIR]emulators/  direct  6812+ twin directories
[DIR]compilers/  direct  791+ twin directories
[DIR]avr_studio/  direct  2 twin directories
[DIR]adaptors/  direct  61 twin directories