bowser-js/bowser

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

5750 stars · 487 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Bowser is a small, fast JavaScript library for detecting browser, platform, and engine from user agent strings, with support for User-Agent Client Hints. It works in both browser and Node.js environments and provides a rich API for parsing and filtering user agents.

Use cases

• detect which browser a user is on
• parse user agent strings in javascript
• get browser name and version from useragent
• detect operating system and device from user agent
• filter users by browser capabilities
• use user-agent client hints for browser detection
• check if user is on internet explorer or safari

When to choose

• you need a lightweight (~5kB gzipped) browser detection library
• you need detection working in both browser and Node.js
• you want a rich API for filtering users by browser, OS, or engine
• you want support for User-Agent Client Hints

When to avoid

• you need server-side device intelligence from real device databases
• you rely solely on user agent parsing in modern browsers where client hints are frozen or reduced
• you need bot/crawler detection

Facets

library · maturity stable

parser developer-tools web-development frontend developer-tools browser cross-platform user-agent-parser browser-detection os-detection device-detection client-hints javascript nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="bowser-js/bowser")