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Test & PolishToolOpen sourceFree
MangoHud
An open Vulkan and OpenGL performance overlay showing FPS, frametime, CPU or GPU load, temperatures, memory, power, and other metrics with logging, presets, and local plotting.
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Why it’s here
When preparing Linux and Steam Deck builds, teams can inspect pacing, thermals, and resource use in real release binaries and retain logs for comparing scenes and graphics settings.
Best fit
Testing, performance, accessibility, and diagnostics expose friction before launch.
performancedebuggingquality-assurance
Before you commit
It primarily targets the Linux graphics stack and available metrics depend on drivers and optional libraries; the overlay adds some overhead, so fix configurations and cross-check formal benchmarks with profilers.