Freedom251 › Hardware monitoring tools
siomon
What siomon is
siomon is a free Linux utility for hardware information and real-time sensor monitoring. Its interactive terminal dashboard reads kernel-exported sensors and tracks minimum, maximum, and average values during a monitoring session. Configurable threshold alerts and CSV logging are available. One-shot commands report CPUs, memory, motherboards, GPUs, storage, network adapters, audio, USB, batteries, PCI, and PCIe hardware. GPU reporting supports NVIDIA through NVML, AMD through amdgpu sysfs, and Intel through i915 or xe sysfs. Reports can be generated as text, JSON, XML, or self-contained HTML. The program has zero mandatory runtime dependencies and reads kernel interfaces. Root access enables additional DMI fields, SMART and NVMe health data, MSR access, RAPL power readings, and SPD timings. NVIDIA details require the NVIDIA driver, while some extra readings use optional kernel modules or dmidecode. Installation is documented through an Ubuntu PPA, the Arch User Repository, and Nix. The repository identifies siomon as MIT licensed.
Who it suits
It suits Linux users who need terminal-based hardware inspection, sensor tracking, alerts, logs, or report exports. Administrators seeking deeper readings can use root access and install the relevant optional components.
What it does well
- Tracks minimum, maximum, and average readings
- Configurable alerts and CSV logging
- Reports export to four formats
- Broad CPU and hardware coverage
- No mandatory runtime dependencies
What to know first
- Linux only
- NVIDIA details require the NVIDIA driver
- Some readings need optional components
- Extra data requires root access
Verdict
siomon combines live sensor monitoring with broad one-shot hardware reporting and multiple export formats. Its dependency-free core is straightforward, while deeper hardware data depends on root access, drivers, or optional modules.
Facts from siomon's own pages
- Access limits
- Root access enables additional DMI fields, SMART and NVMe health data, MSR access, RAPL power readings, and SPD timings. · github.com, 11 Oct 2026
- Alerts and logging
- The dashboard supports configurable sensor threshold alerts and CSV logging. · github.com, 11 Oct 2026
- Dashboard
- The interactive terminal dashboard polls kernel-exported sensors and tracks minimum, maximum, and average readings. · github.com, 11 Oct 2026
- Dependencies
- The README says siomon has zero mandatory runtime dependencies and reads information from kernel interfaces. · github.com, 11 Oct 2026
- Free plan
- Yes · github.com, 24 Sept 2026
- GPU support
- GPU information supports NVIDIA through NVML, AMD through amdgpu sysfs, and Intel through i915 or xe sysfs. · github.com, 11 Oct 2026
- Hardware coverage
- One-shot commands report information about CPUs, memory, motherboards, GPUs, storage, network adapters, audio, USB, batteries, PCI, and PCIe. · github.com, 11 Oct 2026
- Installation
- The README documents installation through an Ubuntu PPA, the Arch User Repository, and Nix, and says more installation options are planned. · github.com, 11 Oct 2026
- License
- The repository identifies the project as MIT licensed. · github.com, 11 Oct 2026
- Monitoring
- The dashboard polls kernel-exported sensors and tracks minimum, maximum, and average readings during a monitoring session. · github.com, 11 Oct 2026
- Optional components
- NVIDIA GPU details require the NVIDIA driver, and some additional readings use optional kernel modules or dmidecode. · github.com, 11 Oct 2026
- Output formats
- The tool can produce text, JSON, XML, and self-contained HTML reports. · github.com, 11 Oct 2026
- Purpose
- siomon is a Linux hardware information and real-time sensor monitoring tool. · github.com, 11 Oct 2026
- Supported platforms
- Linux · github.com, 24 Sept 2026
Where siomon stands on Freedom251
- Hardware monitoring tools#49 of 59
- Hardware Monitoring Software#54 of 59