Frontend Frameworks

python-user-agents

Parse browser user agents for device and browser information.

Status
UnmaintainedNo commits in 1287 days.
Last checked
Checked · Oct 10, 2026
License
Open source
Pricing
Free tier · from $0
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What it is

A Python library that parses user agent strings to extract detailed information about the browser, operating system, and device. It is useful for developers who need to understand their users' environments for analytics or customizing experiences.

python-user-agents stands out by offering a lightweight, easy-to-integrate solution specifically tailored for Python developers needing to parse user agent strings without the overhead of larger frameworks or services.

When it fits — and when it doesn’t

A good fit for

  • Developers who need to parse user agent strings in Python applications for analytics or customization purposes.

  • Web developers looking to understand the technical environment of their users for better experience personalization.

Look elsewhere if

  • Projects that require real-time parsing and analysis at extremely high throughput, as this library is designed for local use cases.

  • Applications requiring integration with non-Python environments where a Python library would not be suitable.

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited support for non-standard or custom user agents

    The library's accuracy may degrade with less common or customized user agent strings, leading to incorrect parsing.

  2. 02

    Lack of real-time updates for new devices and browsers

    The database relies on community contributions and periodic updates, which can lag behind the introduction of new devices and browser versions.

  3. 03

    No built-in caching mechanism for performance optimization

    Repetitive parsing of user agent strings without a caching layer could lead to unnecessary computational overhead in high-traffic applications.

What it does well

  • Accurate parsing of user agent strings for browser, OS, and device information.

  • Comprehensive database of known user agents.

  • Lightweight and easy to integrate into Python projects.

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

How Fast Is It?

Set up python-user-agents

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →
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