woothee
Cross-language UserAgent classifier library, python implementation
Decision gist · record as of 2026-08-14
Yes, if your user-agent patterns are stable and pre-2019. The package is lightweight, dependency-minimal, and has no known vulnerabilities. However, it is dormant—no updates since 2019—so it will not recognize modern browsers, crawlers, or OS releases. Install only if you can tolerate a frozen knowledge base or if you're parsing historical data. For real-time classification of current clients, consider an actively maintained alternative.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Low install friction with a single lightweight dependency (six).
- Maintenance is dormant—last release was 2019-08-08 and no commits since 2024-07-09—but the package is marked Production/Stable and has seen no recent security issues.
License · maintenance · safety
Apache License 2.0 (permissive) — Licensed under Apache License 2.0 (permissive), allowing use in commercial and open-source projects with minimal restrictions; you must include a copy of the license and state significant changes.
last release 2019-08-08 (2563 days) · last repo commit 2024-07-09 · 34 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 80,211 downloads/mo, #14,308 on PyPI
Alternatives
Verify before relying
pip install woothee
import woothee
result = woothee.parse("Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)")
print(result['name'], result['os'], result['version'])- Whether the package's user-agent database is current enough for modern browsers and crawlers released after 2019.
- Performance characteristics when parsing large volumes of user-agent strings.
What it is and what it does
Woothee is a Python user-agent string parser that extracts structured information from HTTP User-Agent headers. It identifies the browser name and version, operating system, device category (pc, smartphone, mobilephone, appliance, crawler, or misc), vendor, and OS version. The package provides two main functions: parse() for detailed extraction and is_crawler() for fast crawler detection.
The library depends only on six for Python 2/3 compatibility and ships as a pure-Python wheel with no compiled dependencies. It's designed for web applications that need to classify incoming requests by client type—useful in analytics, content adaptation, or bot filtering. The package has been stable since 2015 but receives no active maintenance; its user-agent patterns reflect knowledge frozen around 2019.
Use it for
- Classify incoming HTTP requests by browser and OS in web analytics or logging pipelines.
- Detect crawler traffic (bots, search engines) to apply different rate limits or caching rules.
- Adapt web content or API responses based on detected device category (mobile vs. desktop).
- Build device-aware feature flags or A/B testing logic without external services.
- Generate reports on user-agent distribution across a web application's traffic.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if your user-agent patterns are stable and pre-2019.
The package is lightweight, dependency-minimal, and has no known vulnerabilities. However, it is dormant—no updates since 2019—so it will not recognize modern browsers, crawlers, or OS releases. Install only if you can tolerate a frozen knowledge base or if you're parsing historical data. For real-time classification of current clients, consider an actively maintained alternative.
Install
woothee on PyPI
Before you install
Low install friction with a single lightweight dependency (six). Maintenance is dormant—last release was 2019-08-08 and no commits since 2024-07-09—but the package is marked Production/Stable and has seen no recent security issues.
License in practice
Licensed under Apache License 2.0 (permissive), allowing use in commercial and open-source projects with minimal restrictions; you must include a copy of the license and state significant changes.
Quickstart
pip install woothee
import woothee
result = woothee.parse("Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)")
print(result['name'], result['os'], result['version'])Verify before relying
- Whether the package's user-agent database is current enough for modern browsers and crawlers released after 2019.
- Performance characteristics when parsing large volumes of user-agent strings.
Package facts
| License | Apache License 2.0 permissive |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packagesix |
| Maintenance | Dormant 2,563 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 80,211 / month, #14,308 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableEnvironment :: Web EnvironmentIntended Audience :: DevelopersLicense :: OSI Approved :: Apache Software LicenseOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 2Programming Language :: Python :: 2.7Programming Language :: Python :: 3Programming Language :: Python :: 3.5Programming Language :: Python :: 3.6Programming Language :: Python :: 3.7Topic :: Internet :: WWW/HTTPTopic :: Software Development :: Libraries :: Python Modules |
Evidence: woothee-1.10.1-py2.py3-none-any.whl
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See also fake-useragent · user-agents · crawlerdetect · user-agent · httpagentparser · pymobiledetect · fake-headers · ua-parser · robotspy · wptserve