Apps with 'Memory analysis' feature

A highly-customizable multiboot USB stick for modern PC Repair. Supports both Legacy BIOS and UEFI.

Valgrind is an instrumentation framework for building dynamic analysis tools.

CPU-X is a free software that gathers information on CPU, motherboard and more.
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Rekall is the most complete Memory Analysis framework. Rekall provides an end-to-end solution to incident responders and forensic analysts. From state of the art acquisition tools, to the most advanced open source memory analysis framework.

LiveDump is a simple memory dumper which will either dump a region of memory once to a file or constantly dump it every X many milliseconds.