no$psx vs Vita3K

no$psx is freeware for Windows that emulates and debugs PlayStation 1 and PSone software. It is intended to run without special video drivers, plug-ins, virtual CD-ROM drives, a system BIOS, or per-game configuration. Supported disc images include CCD+IMG, CDI, CUE+BIN, MDS+MDF, CHD, NRG, and ISO, alongside raw EXE files and ECM/CDZ decompression. Real CD-ROM drives require wnaspi32.dll, with the maker noting problems on Windows NT/2000 and later. Development tools include a disassembler, debugger, profiler, code and memory breakpoints, assembler, I/O map viewer, VRAM viewer, polygon viewer, TTY console, and PSX hardware specifications. The free BIOS clone may have compatibility issues; an original PSX-BIOS.ROM can be placed in the program folder. The maker says many games have not been tested and compatibility problems may occur. The listed v2.3 Windows 32-bit release adds pixel-accurate GPU rendering, texture/CLUT cache emulation, and timing reproduction. The plan price is free.

Vita3K is a free, experimental, open-source emulator for PlayStation Vita, with builds listed for Windows, macOS, Linux, and Android. The project describes itself as hobby-driven, with developers deciding what to work on and when. Game compatibility varies: the FAQ says over 50% of tested games are marked playable, but not every title is supported and flawless play is not assured. Vita3K accepts .pkg, VCI, NoNpDrm, FAGDec, and manually decrypted games; Vitamin dumps are unsupported and Maidump is unstable. Some titles require PS Vita system modules installed with firmware packages. Keyboard and mouse work out of the box, and SDL3-compatible controllers are supported, with DualShock 4 and DualSense recommended. Vulkan is recommended when supported, while OpenGL remains available for older hardware. Ad-Hoc multiplayer is partly implemented and works with some commercial games through services such as ZeroTier or Tailscale. Users must dump their own commercial games; the project says it does not condone piracy. Minimum PC requirements include a 64-bit CPU, graphics capable of OpenGL 4.4 or Vulkan 1.0, and at least 4 GB RAM.