Speccy is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is Hardinfo, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Speccy and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Speccy are Neofetch, Mission Center, Resources and CPU-X (by X0rg).
Hardinfo is a system information and benchmark tool for Linux. It shows detailed system info, including hardware, environment, and kernel. It can use lm_sensors and ACPI for temperature and battery information. It also has four CPU banchmarks and two FPU benchmarks.
Neofetch is a command-line system information tool written in bash 3.2+. Neofetch displays information about your operating system, software and hardware in an aesthetic and visually pleasing way.
Resources is a simple yet powerful monitor for your system resources and processes, written in Rust and using GTK 4 and libadwaita for its GUI.
CPU-X is a free software that gathers information on CPU, motherboard and more.
CPU Info provide main information about hardware and software of your device. You can get:
lshw (Hardware Lister) is a small tool to provide detailed information on the hardware configuration of the machine.
hwinfo/libhd are used to probe for the hardware present in the system. It can be used to generate a system overview log which can be later used for support.
cpufetch is a command-line tool written in C that displays the CPU information in a clean and beautiful way.
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detects cpu, ram. if you are using linux on an old pc or netbook it is an alternative but not as good