Auth & Identity

Authlib

JavaScript Object Signing and Encryption draft implementation.

Status
Generally available
Last checked
Checked · Oct 13, 2026
License
Open source
Pricing
Free tier · from $0
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What it is

Authlib is a library that provides an implementation of the OAuth2 and OpenID Connect specifications. It supports both client and server-side functionalities, making it useful for developers working on authentication and authorization systems.

Authlib stands out as one of the most comprehensive libraries for implementing OAuth2 and OpenID Connect in Python, offering both client-side and server-side functionalities.

When it fits — and when it doesn’t

A good fit for

  • Python developers building OAuth2 and OpenID Connect compliant services

  • Teams needing a robust library for handling client-side OAuth flows

  • Projects requiring both server and client implementations of OAuth2

Look elsewhere if

  • Developers looking for a full-service authentication platform with a UI

  • Projects that require support for languages other than Python

Known weaknesses

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

  1. 01

    Complex setup and configuration

    Extensive customization options can lead to a steep initial setup process

What it does well

  • Comprehensive OAuth2 and OpenID Connect support

  • Client-side and server-side implementations

  • Extensive documentation and examples

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 Authlib

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

Open the setup guide →
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