12 best JavaScript CPU libraries in 2025
by marketing.admin@openweaver.com 
Updated: Jan 15, 2023
Guide Kit
JavaScript is one of the most widely used programming languages in the world. The main purpose of the development of JavaScript was to provide dynamic interactivity on websites. The JS engine has attracted a significant number of developers from around the world. It become an industry standard for web development and backend programming. In 2020, JavaScript celebrated its 25th birthday, and it continues to be at the forefront of programming languages. When it comes to CPU libraries, there are many JavaScript libraries that can be used for your projects. It's hard to imagine a world without JavaScript CPU and it has many CPU-intensive tasks. Many developers depend on the following JavaScript CPU open source libraries are: scalene - high precision CPU, GPU, and memory profiler; ua-parser-js - UAParser.js Detect Browser, Engine, OS, CPU, and Device type/model from User Agent data; chillout - Reduce CPU usage by nonblocking async loop.
scaleneby plasma-umass
7779 Version:v1.5.21.4Scalene: a high-performance, high-precision CPU, GPU, and memory profiler for Python with AI-powered optimization proposals
scaleneby plasma-umass
JavaScript 7779 Version:v1.5.21.4 License: Permissive (Apache-2.0)
ua-parser-jsby faisalman
7875 Version:2.0.0-alpha.2UAParser.js - Detect Browser, Engine, OS, CPU, and Device type/model from User-Agent & Client-Hints data. Supports browser & node.js environment.
ua-parser-jsby faisalman
JavaScript 7875 Version:2.0.0-alpha.2 License: Permissive (MIT)
react-adaptive-hooksby GoogleChromeLabs
5023 Version:CurrentDeliver experiences best suited to a user's device and network constraints
react-adaptive-hooksby GoogleChromeLabs
JavaScript 5023 Version:Current License: Permissive (Apache-2.0)
gnome-shell-system-monitor-appletby paradoxxxzero
1674 Version:v38Display system informations in gnome shell status bar, such as memory usage, cpu usage, network rates…
gnome-shell-system-monitor-appletby paradoxxxzero
JavaScript 1674 Version:v38 License: Strong Copyleft (GPL-3.0)
chilloutby polygonplanet
590 Version:CurrentReduce CPU usage by non-blocking async loop and psychologically speed up in JavaScript
chilloutby polygonplanet
JavaScript 590 Version:Current License: Permissive (MIT)
Vitalsby corecoding
951 Version:v61.0.0A glimpse into your computer's temperature, voltage, fan speed, memory usage and CPU load.
Vitalsby corecoding
JavaScript 951 Version:v61.0.0 License: Strong Copyleft (GPL-2.0)
node-worker-nodesby allegro
481 Version:v2.5.0A node.js library to run cpu-intensive tasks in a separate processes and not block the event loop.
node-worker-nodesby allegro
JavaScript 481 Version:v2.5.0 License: Permissive (Apache-2.0)
16bitjsby francisrstokes
435 Version:Current💻 A 16-bit virtual machine, including assembly language with 37 instructions, binary assembler, and a step through debugger
16bitjsby francisrstokes
JavaScript 435 Version:Current License: Permissive (MIT)
pidusageby soyuka
467 Version:CurrentCross-platform process cpu % and memory usage of a PID
pidusageby soyuka
JavaScript 467 Version:Current License: Permissive (MIT)
cpupowerby deinstapel
467 Version:v10.1.2Manage the frequency scaling driver of your CPU (Intel Core and AMD Ryzen processors supported)
cpupowerby deinstapel
JavaScript 467 Version:v10.1.2 License: Strong Copyleft (GPL-3.0)
Epiboardby Alexays
293 Version:1.7.3Web Extension — A new tab page extension with material design and useful features :new: :tada:
Epiboardby Alexays
JavaScript 293 Version:1.7.3 License: Permissive (MIT)