The PCSX-Redux project is a collection of tools, research, hardware design, and libraries aiming at development and reverse engineering on the PlayStation 1. The core product itself, PCSX-Redux, is yet another fork of the Playstation emulator, PCSX.
Why do you think that https://github.com/JonathanDotCel/unirom8_bootdisc_and_firmw is a good alternative to pcsx-redux