MemDBG vs scanmem

MemDBG is a console payload and native frontend for memory inspection, scanning, debugging, trainer creation and research on PS4, PS5 and host machines. Its stated uses include offline homebrew development, reverse-engineering education, preservation and authorized security research. Scan workflows include exact values, process-wide searches, AOB patterns, pointer chains, unknown values and heuristic Smart Auto-Search. Debugging tools cover thread control, stepping, registers, breakpoints, watchpoints, stack walking and disassembly. Trainer workflows support .cht save and load, batchcode import, ON/OFF values, lock intervals and patch-to-trainer export. The frontend supports desktop-side Lua and Python plugins from repository manifests, with a public MemDBG plugin repository as its default source. It documents a GDB remote bridge for IDA Pro and an optional x64dbg plugin bridge. MemDBG is free and licensed GPL-3.0-or-later; it is in active pre-release development. Host builds bind to loopback by default, and the project recommends an allowlisted frontend IP for LAN sessions. Some macOS debugger actions may need SIP or code-signing changes; the iOS/iPadOS release artifact is unsigned.

scanmem is a free, open-source interactive debugging utility for finding and changing variable values in an executing process. It searches a process by PID and uses values observed over successive scans to narrow the possible memory addresses. The command-line tool can search for exact values, compare changed or unchanged values, find increases or decreases, take snapshots, and search strings when configured for string scans. It can monitor matches as their values change and set values for selected matches or all known matches. GameConqueror provides a graphical front end with a process finder, flexible search syntax, variable locking, and a memory browser and editor; users can choose search regions and types. The project separates the command-line frontend from libscanmem, which performs the scanning. The project describes scanmem as a Linux utility and documents an Android build using a standalone Android NDK toolchain. Linux interactive commands require libreadline and a mounted /proc filesystem, while the GUI has additional dependencies. The default scan data type is int, though the option command can change it. scanmem is GPLv3; libscanmem is LGPLv3.