JavaScript user-agent

Open-source JavaScript projects categorized as user-agent

Top 4 JavaScript user-agent Projects

  1. ua-parser-js

    "Unmask Your Traffic" - UAParser.js: The Essential Web Development Tool for User-Agent Detection

    Project mention: Ask HN: Who wants to be hired? (March 2025) | news.ycombinator.com | 2025-03-03
  2. InfluxDB

    InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

    InfluxDB logo
  3. react-device-detect

    Detect device, and render view according to detected device type.

  4. UserAgent-Switcher

    A User-Agent spoofer browser extension that is highly configurable

  5. robots-parser

    NodeJS robots.txt parser with support for wildcard (*) matching.

    Project mention: Amazon's AI crawler is making my Git server unstable | news.ycombinator.com | 2025-01-19

    > Would it bail out if it saw this robots.txt?

    Yes, it should — I use the library below, and it should split at the slash character, treating it as a prefix match, per spec.

    https://github.com/samclarke/robots-parser/blob/master/Robot...

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

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    sevalla.com | 2 Sep 2025
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Index

What are some of the best open-source user-agent projects in JavaScript? This list will help you:

# Project Stars
1 ua-parser-js 9,818
2 react-device-detect 2,883
3 UserAgent-Switcher 1,208
4 robots-parser 159

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