PrBoom-Plus is a modified PrBoom port with
uncapped framerate, variable gamespeed, re-record,
walkcam, chasecam, full mouselook, FOV, and other
features without loss of compatibility with the
original Doom.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.