Atmel Software Framework Linux. ASF strengthens Studio by providing access to ready-to-use code in the same environment to minimize much of the low-level design required for projects. Atmel Software Framework ASF consists of a number of modules that can be added to a C language project in Atmel Studio.
It currently supports a variety of Atmel AVR MSP430 and the ARM Cortex-M series of microcontrollers with other platforms to follow. Each software module is provided with full source code example of usage and ready-to-use projects. I have not seen any postings that address the currently posted linux version of FLIP running on 64-bit linux.
Timesys is the provider of LinuxLink a high-productivity software development framework for embedded Linux applications.
Drivers a shell an event-driven GUI framework and much more. I did not see a category for AVR Software Tools like the AVR32 has so I am posting here. Microchip Software Package Overview. Each software module is provided with full source code example of usage and ready-to-use projects.