memwatch

What memwatch is

memwatch is a free, open-source macOS utility for searching and changing values in a running process’s memory through an interactive interface. Searches can target strings, 32- or 64-bit floating-point values, and signed or unsigned integers from 8 to 64 bits. After searching, you can refine matches with comparisons such as equal, greater than or less than. The interface lets you read, write, monitor, freeze and unfreeze found values. It also includes commands to pause or resume the target process and send Unix signals, though support for controlling execution state is described as experimental. The project describes memwatch as a macOS memory editor that should build and run on recent OS X versions. Its author says they use it for game cheats and as a debugging aid alongside tools such as gdb. Installation requires building from source with phosg and libamd64, then running make and sudo make install. The command to attach to a target process also uses sudo. The MIT License permits use without charge and provides the software without warranty.

Who it suits

It suits macOS users who need to inspect or modify process memory for debugging or game cheats. Users should be comfortable building software from source and attaching to a process with sudo.

Limits

Execution-state support is described as experimental. The MIT License provides the software without warranty.

Getting started

1. Use a recent OS X or macOS system.
2. Install or build the phosg and libamd64 dependencies.
3. Build memwatch from its source repository.
4. Run make, then sudo make install.
5. Use sudo when running memwatch to attach to a target process.

Verdict

memwatch provides detailed memory search and value controls for macOS, with process commands whose execution-state support is experimental. Using it requires a source build and sudo access to attach to a target process.