No specific info about version 4.0. Please visit the main page of PCWHD on Software Informer.
Integrated development environment for editing, debugging and testing software.
It provides a graphical development environment for Microchip microcontrollers
It helps developing embedded apps employing Microchip's microcontrollers.
PIC Development Studio is a simulator for Microchip PIC 16F84 microcontroller.
PIC Disassembler can convert raw binary files to editable Mnemonics files.
IDE for the open source GCBasic compiler by Hugh Considine.