Alpha software: FOSSbench scores have not yet been tested to be 100% accurate.
FOSSbench

Latest release

Download FOSSbench v0.4.2

Choose the build for your operating system and processor. Releases are fetched automatically from GitHub.

Release notes on GitHub

What’s new

Removed CPU telemetry (background temperature and clock speed sampling during benchmark runs). It relied on undocumented, OS-specific interfaces (raw AppleSMC keys on macOS, WMI ACPI thermal zones on Windows, /sys/class/thermal and /sys/class/hwmon on Linux) that proved unstable and inconsistent across operating systems and hardware, and live per-core clock speed was never obtainable on macOS at all through any public API. Rather than ship telemetry data that can silently jump between physical sensors mid-run or simply not exist on a given platform, this release disables the feature entirely: fossbench.net no longer accepts or displays it, and the client no longer collects it. The one-time background system-activity check (CPU/memory/process sampling before a run) is unaffected and still available via --no-system-check. **Full Changelog**: https://github.com/owenrummage/fossbench/compare/v0.4.0...v0.4.2

Published Jul 21, 2026, 7:00 PM9 downloadable files

fossbench-linux-amd64.tar.gz

32.4 KB · application/x-gtar

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fossbench-linux-arm64.tar.gz

36.6 KB · application/x-gtar

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fossbench-linux-i386.tar.gz

26.7 KB · application/x-gtar

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fossbench-linux-ppc32be.tar.gz

44.3 KB · application/x-gtar

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fossbench-macos-amd64.zip

19.4 KB · application/zip

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fossbench-macos-arm64.zip

18.9 KB · application/zip

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fossbench-windows-amd64.zip

125.7 KB · application/zip

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fossbench-windows-i386.zip

119.6 KB · application/zip

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SHA256SUMS

752 B · application/octet-stream

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Not sure which build to use? Most Windows and Linux PCs use amd64. Apple silicon Macs use arm64.