memwatch

What memwatch is

memwatch is a free, open-source macOS utility for searching and changing values in a running process’s memory. Its interactive interface can search by value and refine results with comparisons such as equal, greater than, or less than. Search types include strings, 32- and 64-bit floating-point values, and signed or unsigned integers from 8 to 64 bits. Found values can be read, written, monitored, frozen, or unfrozen. The interface also has commands to pause or resume a target process and send it Unix signals, though execution-state support is described as experimental. The project says it should build and run on recent OS X versions. Its author describes using 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 run command uses sudo to attach memwatch to a target process. It is distributed under the MIT License, which permits use without charge and provides the software without warranty.