pip install passlib==1.7.4

comprehensive password hashing framework supporting over 30 schemes

Source
Among top 1000 packages on PyPI.
Over 5.6M downloads in the last 90 days.

Commonly used with passlib

Based on how often these packages appear together in public requirements.txt files on GitHub.

WTForms-Components

Additional fields, validators and widgets for WTForms.

WTForms-Alchemy

Generates WTForms forms from SQLAlchemy models.

blinker

Fast, simple object-to-object and broadcast signaling

validators

Python Data Validation for Humans™.

intervals

Python tools for handling intervals (ranges of comparable objects).

infinity

All-in-one infinity value for Python. Can be compared to any object.

Flask-DebugToolbar

A toolbar overlay for debugging Flask applications.

Flask-Principal

Identity management for flask

Flask-Admin

Simple and extensible admin interface framework for Flask

jsmin

JavaScript minifier.

Flask-Cache

Adds cache support to your Flask application

Flask-Security

Simple security for Flask apps.

Flask-Assets

Asset management for Flask, to compress and merge CSS and Javascript files.

Flask-BabelEx

Adds i18n/l10n support to Flask applications

Flask-Mail

Flask extension for sending email

webassets

Media asset management for Python, with glue code for various web frameworks

UgliPyJS

Python wrapper for Uglify-JS library.

WTForms

A flexible forms validation and rendering library for Python web development.

Flask-Gravatar

Small extension for Flask to make usage of Gravatar service easy.

Version usage of passlib

Proportion of downloaded versions in the last 3 months (only versions over 1%).

1.7.4

49.13%

1.7.1

32.71%

1.7.2

8.87%

1.6.5

8.03%