.PID File Extension
File Type 1Process ID File
What is a PID file?
Generic process log, data, or configuration file used on Unix-based systems; typically stores one or more process IDs, which uniquely identify a process in the operating system.
An example use of a PID file is to log process IDs of a daemon that starts and stops periodically.
File Type 2Creative Driver File
.PID File Association 2
Hardware driver file such as PdtIdMgr.pid, installed by Creative software; typically installed in the \Program Files\Creative\Shared Files\ directory along with other driver files; enables communication with Creative hardware devices, such as sound cards or portable media players like the Creative Zen.