This is a page for utilities on Github that I have either confirmed or not confirmed that they work. But are included in this page because they could have either useful functionality or information that is worth keeping track of.
jPSXdec : https://github.com/m35/jpsxdec
jPSXdec offers the ability to replace XA audio, video, and TIM images.
Document to make it easier for you to get started with coding the psx.
Polytron Museum: https://github.com/dannycalleri/polytron
Display .TMD format used to store 3D models for the PSX.
PSn00bSDK is an open source SDK for developing homebrew games