Highly-Experimental Playstation and PlayStation2 Simulator for x64 based systems.
In development - Pre-initial Source code and binary release. Testing usage only

Here's changelog for latest build, released Jan 10, 2021:
hps1x64 - Playstation 1 simulator:
+ improved multi-threading,
+ multi-player control pad fixes,
+ R3000A reg read recompiler fix

hps2x64 - Playstation 2 simulator
+ improved multi-threading,
+ partial data cache implementation (except lock bit),
+ partial btac simulation,
+ R5900 reg read recompiler fix
:: Sourceforge project repository