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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.
Visit official siteContent updated Aug 3, 2026Automated check reached the official site · Checked Aug 24, 2026
Why use it
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.
Where it fits
Use testing, performance, accessibility, and diagnostic tools to remove problems players will notice.
performancedebuggingquality-assurance
What to check
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.