Awesome

<img src="docs/assets/no-dependencies.svg" alt="no dependencies">

The Systeminformation Project

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               ^^^[_]^^^*

I wish you all a Merry Christmas and a peaceful New Year 2025.

This is amazing. Started as a small project just for myself, it now has > 15,000 lines of code, > 650 versions published, up to 8 mio downloads per month, > 330 mio downloads overall. #1 NPM ranking for backend packages. Thank you to all who contributed to this project!

Please support this project ... ☕️

Over the past few years I spent more than 3.000 hours working on this project and invested in hardware to be able to test on different platforms. Currently I am working very hard on the next new version 6.0 completely rewritten in TypeScript and with a lot of new features. Any support is highly appreciated - Buy me a coffee.

Your contribution make it possible for me to keep working on this project, add new features and support more platforms. Thank you in advance!

New Version 5.0

The new Version 5 is here - this next major version release 5.0 comes with new functionality and several improvements and changes (some of them are breaking changes!):

• added audio: get detailed audio device information
• added bluetooth: get detailed bluetooth device information
• added dockerImages, dockerVolumes: get detailed information about docker images and volumes
• added printer: get information from detected printers
• added usb: get detailed usb controller and device information
• added wifi interfaces and connections: extended wifi information
• better uuid function to get unique hardware and OS UUIDs
• better/extended cpu info detection
• better/extended system info detection
• Apple Silicon M1/M2/M3 support
• better Raspberry-PI detection
• systeminformation website updated and extended with full documentation and examples systeminformation.io
• lot of minor improvements

Breaking Changes in version 5: you will see several breaking changes for the sake of a more consistent API interface and to be future proof. Read the detailed version 5 changes.

I did a lot of testing on different platforms and machines but of course there might be some issues that I am not aware of. I would be happy if you inform me when you discover any issues. Issues can be opened here.

Quick Start

Lightweight collection of 50+ functions to retrieve detailed hardware, system and OS information.

• simple to use
• get detailed information about system, cpu, baseboard, battery, memory, disks/filesystem, network, docker, software, services and processes
• supports Linux, macOS, partial Windows, FreeBSD, OpenBSD, NetBSD, SunOS and Android support
• no npm dependencies

Attention: this is a node.js library. It is supposed to be used as a backend/server-side library and will definitely not work within a browser.

Installation

npm install systeminformation --save

or simpler

npm i systeminformation

Give it a try with npx?

You just want to give it a try - right from your command line without installing it? Here is how you can call it with npx:

# get basic system info (System, OS, CPU)
npx systeminformation info

# obtain all static data - may take up to 30 seconds
npx systeminformation

Still need Version 4?

If you need version 4 (for compatibility reasons), you can install version 4 (latest release) like this

npm install systeminformation@4 —save

or simpler

npm install systeminformation@4

Usage

All functions (except version and time) are implemented as asynchronous functions. Here a small example how to use them:

const si = require("systeminformation");

// promises style - new since version 3
si.cpu()
  .then((data) => console.log(data))
  .catch((error) => console.error(error));

News and Changes

Latest Activity

(last 7 major and minor version releases)

• Version 5.23.0: usb() added serial number (linux)
• Version 5.22.0: wifiConnections() added signal quality
• Version 5.21.0: graphics() added subVendor (linux)
• Version 5.20.0: mem() added writeback and dirty (linux)
• Version 5.19.0: currentLoad() added steal and guest time (linux)
• Version 5.18.0: fsSize() added optional drive parameter
• Version 5.17.0: graphics() added positionX, positionY (macOS)
• Version 5.16.0: fsSize() added rw property
• Version 5.15.0: blockDevices() added device
• Version 5.14.0: blockDevices() added raid group member (linux)
• Version 5.13.0: networkConnections() added process name (macOS)
• Version 5.12.0: cpu() added performance and efficiency cores
• Version 5.11.0: networkInterfaces() added default property and default parameter
• Version 5.10.0: basic android support
• Version 5.9.0: graphics() added properties (macOS)
• Version 5.8.0: disksIO() added waitTime, waitPercent (linux)
• Version 5.7.0: diskLayout() added S.M.A.R.T for Windows (if installed)
• Version 5.6.0: cpuTemperature() added socket and chipset temp (linux)
• Version 5.5.0: dockerVolumes() added
• Version 5.4.0: dockerImages() added
• Version 5.3.0: osInfo() added remoteSession (win only)
• Version 5.2.0: wifiInterfaces() and wifiConnections() added
• Version 5.1.0: memLayout() added ECC flag, bios() added language, features (linux)
• Version 5.0.0: new version 5 - attention there are some breaking changes. See detailed version 5 changes here.
• ...

You can find all changes here: detailed changelog

Core concept

Node.js comes with some basic OS information, but I always wanted a little more. So I came up to write this little library. This library is still a work in progress. It is supposed to be used as a backend/server-side library (it will definitely not work within a browser). It requires node.js version 4.0 and above.

I was able to test it on several Debian, Raspbian, Ubuntu distributions as well as macOS (Mavericks, Yosemite, El Captain, Sierra, High Sierra, Mojave, Catalina, Big Sur) and some Windows 7, Windows 8, Windows 10, FreeBSD, OpenBSD, NetBSD and SunOS machines. Not all functions are supported on all operating systems. Have a look at the function reference in the docs to get further details.

If you have comments, suggestions & reports, please feel free to contact me!

I also created a nice little command line tool called mmon (micro-monitor) for Linux and macOS, also available via github and npm

Reference

Function Reference and OS Support

Full function reference with examples can be found at https://systeminformation.io.

1. General

2. System (HW)

3. CPU

4. Memory

5. Battery

• See known issues if you have a problem with macOS temperature or windows temperature

6. Graphics

7. Operating System

8. Current Load, Processes & Services

9. File System

10. USB

11. Printer

12. Audio

13. Network related functions

14. Wifi

15. Bluetooth

16. Docker

17. Virtual Box

16. "Get All / Observe" - functions

cb: Asynchronous Function Calls (callback)

Remember: all functions (except version and time) are implemented as asynchronous functions! There are now three ways to consume them:

Callback Style

const si = require("systeminformation");

si.cpu(function (data) {
  console.log("CPU Information:");
  console.log("- manufacturer: " + data.manufacturer);
  console.log("- brand: " + data.brand);
  console.log("- speed: " + data.speed);
  console.log("- cores: " + data.cores);
  console.log("- physical cores: " + data.physicalCores);
  console.log("...");
});

Promises

Promises Style is new in version 3.0.

When omitting callback parameter (cb), then you can use all function in a promise oriented way. All functions (except of version and time) are returning a promise, that you can consume:

const si = require("systeminformation");

si.cpu()
  .then((data) => {
    console.log("CPU Information:");
    console.log("- manufacturer: " + data.manufacturer);
    console.log("- brand: " + data.brand);
    console.log("- speed: " + data.speed);
    console.log("- cores: " + data.cores);
    console.log("- physical cores: " + data.physicalCores);
    console.log("...");
  })
  .catch((error) => console.error(error));

Async / Await

Using async / await (available since node v7.6)

Since node v7.6 you can also use the async / await pattern. The above example would then look like this:

const si = require("systeminformation");

async function cpuData() {
  try {
    const data = await si.cpu();
    console.log("CPU Information:");
    console.log("- manufacturer: " + data.manufacturer);
    console.log("- brand: " + data.brand);
    console.log("- speed: " + data.speed);
    console.log("- cores: " + data.cores);
    console.log("- physical cores: " + data.physicalCores);
    console.log("...");
  } catch (e) {
    console.log(e);
  }
}

Known Issues

macOS - Temperature Sensor

To be able to measure temperature on macOS I created a little additional package. Due to some difficulties in NPM with optionalDependencies I unfortunately was getting unexpected warnings on other platforms. So I decided to drop this optional dependency for macOS - so by default, you will not get correct values.

This additional package is now also supporting Apple Silicon M1/M2/M3 machines.

But if you need to detect macOS temperature just run the following additional installation command:

$ npm install osx-temperature-sensor --save

systeminformation will then detect this additional library and return the temperature when calling systeminformations standard function cpuTemperature()

Windows Temperature, Battery, ...

get-WmiObject - which is used to determine temperature and battery sometimes needs to be run with admin privileges. So if you do not get any values, try to run it again with according privileges. If you still do not get any values, your system might not support this feature. In some cases we also discovered that get-WmiObject returned incorrect temperature values.

Linux Temperature

In some cases you need to install the Linux sensors package to be able to measure temperature e.g. on DEBIAN based systems by running sudo apt-get install lm-sensors

Linux S.M.A.R.T. Status

To be able to detect S.M.A.R.T. status on Linux you need to install smartmontools. On DEBIAN based Linux distributions you can install it by running sudo apt-get install smartmontools

Windows Encoding Issues

I now reimplemented all windows functions to avoid encoding problems (special chacarters). And as Windows 11 now dropped wmic support, I had to move completely to powershell. Be sure that powershell version 5+ is installed on your machine. On older Windows versions (7, 8) you might still see encoding problems due to the old powershell version.

*: Additional Notes

In fsStats(), disksIO() and networkStats() the results / sec. values (rx_sec, IOPS, ...) are calculated correctly beginning with the second call of the function. It is determined by calculating the difference of transferred bytes / IOs divided by the time between two calls of the function.

The first time you are calling one of these functions, you will get null for transfer rates. The second time, you should then get statistics based on the time between the two calls ...

So basically, if you e.g. need a value for network stats every second, your code should look like this:

const si = require("systeminformation");

setInterval(function () {
  si.networkStats().then((data) => {
    console.log(data);
  });
}, 1000);

Beginning with the second call, you get network transfer values per second.

Finding new issues

I am happy to discuss any comments and suggestions. Please feel free to contact me if you see any possibility of improvement!

Comments

If you have ideas or comments, please do not hesitate to contact me.

Happy monitoring!

Sincerely,

Sebastian Hildebrandt, +innovations

Credits

Written by Sebastian Hildebrandt sebhildebrandt

Contributors

• Guillaume Legrain glegrain
• Riccardo Novaglia richy24
• Quentin Busuttil Buzut
• lapsio lapsio
• csy csy
• Tiago Roldão tiagoroldao
• dragonjet dragonjet
• Adam Reis adamreisnz
• Jimi M ItsJimi
• Git² GitSquared
• weiyin weiyin
• Jorai Rijsdijk Erackron
• Rasmus Porsager porsager
• Nathan Patten nrpatten
• Juan Campuzano juancampuzano
• Ricardo Polo ricardopolo
• Miłosz Dźwigała mily20001
• cconley717 cconley717
• Maria Camila Cubides MariaCamilaCubides
• Aleksander Krasnicki plakak
• Alexis Tyler OmgImAlexis
• Simon Smith si458

OSX Temperature: credits here are going to:

• Frank Stock pcafstockf - for his work on smc-code

Copyright Information

Linux is a registered trademark of Linus Torvalds. Apple, macOS, OS X are registered trademarks of Apple Inc., Windows is a registered trademark of Microsoft Corporation. Node.js is a trademark of Joyent Inc., Intel is a trademark of Intel Corporation, AMD is a trademark of Advanced Micro Devices Inc., Raspberry Pi is a trademark of the Raspberry Pi Foundation, Debian is a trademark owned by Software in the Public Interest, Inc., Ubuntu is a trademark of Canonical Ltd., FreeBSD is a registered trademark of The FreeBSD Foundation, NetBSD is a registered trademark of The NetBSD Foundation, Docker is a trademark of Docker, Inc., Sun, Solaris, OpenSolaris and registered trademarks of Sun Microsystems, VMware is a trademark of VMware Inc, Virtual Box is a trademark of Oracle Corporation, Xen is a registered trademark of Xen Project, QEMU is a trademark of Fabrice Bellard, bochs is a trademark of The Bochs Project, USB and USB Logo are trademarks of USB Implementation Forum, Bluetooth and Bluetooth Logo are trademarks of Bluetooth SIG, Android is a trademark of Google LLC, Parallels is a trademarks of Parallels International GmbH.

All other trademarks are the property of their respective owners.

License

The MIT License (MIT)

Copyright © 2014-2024 Sebastian Hildebrandt, +innovations.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Further details see LICENSE file.