| EPI | Abbreviation of Epinephrine CFW |
| CFW | Custom Firmware |
| HEN | Homebrew Enabler |
| CL | Custom Launcher |
| IPL | Initial Program Loader |
| PSPemu | PlayStation Portable Emulator (PS Vita). Uses real PSP hardware for CPU and GPU, with peripherals being HLE. |
| UMDemu | Universal Media Disc Emulator |
| CEF (eCFW) | Custom Firmware for Vita’s pspemu |
| ePSP | PS Vita’s stock pspemu in PSP mode. |
| ePSX | PS Vita’s stock pspemu in PS1 mode. Uses a modified version of POPS running on the Vita’s built-in PSP hardware, with sound emulation and screen upscaling handled by the native Vita hardware/software. It uses the same PSPemu as ePSP, with a flag that changes its behavior when playing PS1 games. |
| vPSP | Adrenaline-patched pspemu with mixed PSP/PS1 mode. The Adrenaline patches make it behave more similarly to a real PSP, hence a true Virtual PSP. |
| POPS | PlayStation One Portable Station (PS1 emulator for PSP) |
| VitaPOPS | A modified version of POPS for the PS Vita. It is largely based on 6.60 with several changes, mainly related to sound emulation, now handled by the Vita itself since ePSP lacks the Media Engine coprocessor used by POPS on PSP to emulate sound. |
| UMD | Universal Media Disc |
| FTP | File Transfer Protocol |
| XMB | Xross Media Bar |
| VSH | Visual SHell |
| RIF | Rights Information Files |
| QCMA | Qt Content Manager Assistant |
| ???0 | Question marks could mean ux, ur, uma, imc, or xmc, depending on the Memory Stick Location configuration. |
| ms0 | Standard PSP Memory Stick drive. |
| ef0 | PSP-Go Internal Memory Card drive. |
| ux0 | Standard PS Vita Memory Stick drive. |