Exploits softmods

https://github.com/brad-lin/FreePSXBoot - Load arbitrary code on the PSX using only a memory card

https://github.com/JonathanDotCel/unirom8_bootdisc_and_firmware_for_ps1 - Custom Xplorer/Action Replay firmware, bootdisc, import player (see NOTPSXserial)

https://github.com/socram8888/tonyhax - Software backup loader exploit using game specific savegames