PCSX-Redux

PCSX-Redux is a free set of tools for PlayStation 1 development and reverse engineering, centered on a fork of the PCSX emulator. It includes VRAM, MIPS, and SPU debugging tools, plus save states and a GDB server for setting breakpoints and controlling program execution from a compatible IDE. Users can work with a Lua console and editor, or connect to Ghidra 10.3 or newer for MIPS debugging and reverse engineering. Graphics support includes software and OpenGL GPUs, filtering, true-colour rendering, MSAA antialiasing, and wireframe or vertex polygon views. The emulator supports Xbox controllers, digital and analog controller emulation, and PlayStation Mouse emulation. OpenBIOS provides a MIPS R3000A BIOS implementation that can boot PlayStation 1 games without a retail BIOS, although the listed system requirement says a BIOS is required. Official downloads are listed for Windows Intel 64-bit, Linux Intel 64-bit AppImage, and macOS Arm. The project describes its codebase as usable but still needing cleanup before a first stable release, with experimental components. The macOS build is unsigned and may trigger an Apple malware-check warning.