MemDBG

MemDBG combines a console payload and native frontend for memory work on PS4, PS5, and host machines. It is best suited to authorized homebrew, preservation, education, and security-research workflows. Its scanning, debugger, and trainer tools form a broad toolkit, but pre-release status and platform caveats make it a considered choice rather than a plug-and-play utility.

Overview

The project brings memory inspection, debugging, and trainer building together, using its versioned MDBG protocol to connect components. A separate ps5debug-compatible listener can serve older trainer and debugger clients. That compatibility is useful when an established client is part of a workflow, while the separate protocol paths mean users should confirm which interface their tools require.

MemDBG is licensed GPL-3.0-or-later and remains in active pre-release development. Its maintainers limit the intended use to offline development and other authorized work, and explicitly reject online cheating, piracy, unauthorized access, or disruption of online services and other players. It is not the right choice for online game manipulation or access to systems without permission.

Key features

Scanning and debugging

Scanning covers exact values, process-wide searches, AOB patterns, pointer chains, unknown values, and heuristic Smart Auto-Search. The range supports both targeted searches and investigations where the value or location is not yet known. Debugger controls include thread management, stepping, registers, breakpoints, watchpoints, stack walking, and disassembly, making the project relevant to users who need more than a basic value scanner.

Trainer workflows and extensions

Trainer tools can save and load .cht files, import batchcode, manage ON/OFF values and lock intervals, and export patches to trainers. Desktop-side Lua and Python plugins load from repository manifests, with the public MemDBG plugin repository as the default source. This gives technically capable users room to extend workflows, though the plugin model is oriented toward desktop frontends.

MemDBG documents a GDB remote bridge for IDA Pro and an optional x64dbg plugin bridge. Its protocol documentation caps packet and MEMORY_READ sizes at 1 MiB and batch reads or writes at 64 items, constraints that matter for integrations moving larger amounts of data at once.

Pricing

MemDBG is free and open source, with no free trial because there is no paid tier described. GPL-3.0-or-later licensing makes it a fit for users who can work with open-source software; there are no plan-based feature or seat distinctions to weigh.

Platforms

The project identifies Android, iOS, Linux, macOS, and Windows support, while its stated target environments include PS4, PS5, and host machines. Platform support does not mean identical setup across systems: some macOS debugger actions may require SIP or code-signing changes, and the iOS/iPadOS release artifact is unsigned. Host builds bind to loopback by default; for LAN sessions, the project recommends an allowlisted frontend IP. These caveats favor users comfortable checking setup and access controls before connecting devices.

Who it's for

MemDBG is aimed at people working on systems they own or are authorized to analyze: homebrew developers, reverse-engineering students, preservationists, and security researchers. Its mix of scanning, debugging, scripting, and trainer export is strongest when a project needs several of those stages in one tool. Casual users seeking a supported, low-setup utility—or anyone intending to affect online services or other players—should choose something else.

Pros and cons

Pros: Broad scan methods and debugger controls cover exploratory and targeted memory work in one project.

Pros: .cht handling, batchcode import, lock intervals, and patch export support a complete trainer workflow.

Pros: Lua and Python plugins plus IDA Pro and x64dbg bridges offer extension and integration paths.

Cons: Active pre-release development makes it less suitable for workflows that depend on a settled release.

Cons: macOS debugger setup may involve SIP or code-signing changes, and the iOS/iPadOS artifact is unsigned.

Cons: Protocol size and batch limits constrain large transfers, while LAN use calls for deliberate frontend allowlisting.

Alternatives

For a broader comparison, see Game Memory Editors.

chromedp is a free, MIT-licensed Go package for readers who need a self-hosted or API-oriented option and are working with Go 1.25 or newer, rather than console-focused debugging.

DOSBox Cheat Engine is a free MIT-licensed option for DOSBox Staging 0.83+ users who want to work specifically in that environment.

ReClass.NET is a free MIT-licensed alternative for readers focused on Linux or Windows.

CoSMOS is a free Linux and Windows alternative for users who value no registration, locked features, adware, or hidden software.

ProMod offers a free iOS option for users who need up to six mods toggled on at once; its desktop plan has custom pricing.

scanmem is a free GPLv3 option for Android or Linux users who want an open-source memory scanner.

Squalr is an open-source alternative spanning Android, API, Linux, macOS, and Windows.

Game Cheetah is a free open-source alternative for Linux, macOS, or Windows users.

Verdict

Choose MemDBG if you need a free, open-source toolkit that connects memory scanning, debugger controls, and trainer workflows for authorized console or host research. Its breadth and integration options are the main reasons to choose it; its pre-release state and uneven platform setup are the reasons to look elsewhere when stability or straightforward installation matters most.