AVR-Eclipse is a plugin for the Eclipse IDE which adds toolchain support, through CDT, for the gcc compiler for the Atmel AVR series of microcontrollers, and adds a toolbar button to allow quick upload of produced code to a target device.
Source code has been migrated to Github:
https://github.com/ecdpalma/piccbuilder
The PicCBuilder is an Eclipse plugin for allowing the use of Eclipse CDT as the editor and builder of projects for Microchip PIC microcontrollers. It creates makefiles that involke the C30 or C32 toolchain to generate the binary files.