PIC16F877A

 MPLAB

To download MAPLAB IDE v8.85

Hi TECH C

To download Hi TECH C v9.83 (Can be used for PIC10, PIC12, PIC16)

To download Hi TECH C v9.80 (Can be used for PIC18)

http://www.ulozto.sk/xoMfeHaF/hi-tech-c-compiler-for-pic10-12-16-mcus-v9-83-rar


Proteus

To download Proteus v7.10