OCCT 17.1.9 rewrote its memory test as 16 blocks that can be combined at will, next to a power supply stress test and live temperature and voltage curves. The personal edition is free, on both Windows and Linux.

Every disk carries its own health report and hides it in raw numbers. GSmartControl lists the attributes in plain language, highlights the dangerous ones, runs short and long self tests, and keeps the reports for comparison.

AFUWIN is the firmware flashing utility from AMI, the company whose code sits inside most motherboards. It runs from inside the operating system, flashes a full image or a chosen region, and verifies the result afterwards.

Prime95 is the official stress tool of the GIMPS prime search: Small FFTs pushes cores and cache to the limit, Large FFTs leans on the memory controller, and a portable cross-platform build makes it the shared yardstick for overclock stability, cooling and power checks.

Blender Benchmark is the Blender Foundation open source render benchmark, measuring Cycles performance on fixed scenes for CPU and GPU, with scores that can be uploaded anonymously to Open Data and compared with machines worldwide.

FurMark 2 is a free stress test and benchmark for graphics cards, rebuilt as a cross-platform tool. It lists OpenGL and Vulkan tests, puts the familiar fur-covered ring on screen and loads the GPU far beyond any game, with live charts for temperature, clocks and usage. Windows, Linux on x86_64 and ARM64, and a command-line mode for automated runs.

Prime95 began as the client for a distributed prime search and became the reference load for overclocking and cooling. Several test sizes decide whether the processor alone or the whole memory path is put under strain, and it runs free on three systems.

UEFITool opens a firmware image layer by layer into volumes, modules and drivers, can extract or replace a module, and runs on all three desktop systems.

Flashrom identifies and reads or writes the flash chip on a board, either through the internal interface or with an external programmer, and asks for a backup first.

An old stress test and benchmark that holds a graphics card near full load inside a steampunk archipelago, with tessellation and real time global illumination built in. Scoring, looped soaking and free roaming modes, with a basic edition free for personal use.

A GPU benchmark built on a dense indoor scene with ray traced global illumination, reporting score, lowest frame rate, temperature and clock, free for personal use with a paid tier for higher presets.

GParted 1.8.1 is the stable release listed on the project page, with the live boot image numbered 1.8.1-6. Published as free software under the GNU GPL version 2 or later, it resizes, copies and moves partitions without losing data.