I am looking for a PIC development environment that is better than MPLab. Is it possible to to install and configure Eclipse to work with PIC microcontrollers?
Microchip MPLAB X is in Beta, and soon to be released. It is based on NetBeans, similar to Eclipse, and is available for Windows, Linux and Mac OS X. It supports all Microchip microcontrollers, including the PIC32. There are free versions of compilers available for download for 8-bit, 16-bit and 32-bit MCUs. It is a big improvement over MPLAB 8 and works well on Mac and Linux, not just Windows.
I haven't used it but http://sourceforge.net/projects/piccbuilder/ may be what you are looking for.
You can also use Visual Studio eg VC++ Express (free) as an editor but not as a debugger, as others have done. (Some other alternatives at that link).