pip install PyNaCl==1.4.0

Python binding to the Networking and Cryptography (NaCl) library

Source
Among top 1000 packages on PyPI.
Over 47.5M downloads in the last 90 days.

Commonly used with PyNaCl

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

ntlm-auth

Creates NTLM authentication structures

asn1crypto

Fast ASN.1 parser and serializer with definitions for private keys, public keys, certificates, CRL, OCSP, CMS, PKCS#3, PKCS#7, PKCS#8, PKCS#12, PKCS#5, X.509 and TSP

discordpy

A package to prevent exploit

expatriate

Library wrapping expat for parsing and generating XML and mapping objects from XML

Fabric3

Fabric is a simple, Pythonic tool for remote execution and deployment (py2.7/py3.4+ compatible fork).

pywinrm2

Python library for Windows Remote Management

ansible-review

reviews ansible playbooks, roles and inventory and suggests improvements

easyhid

A simple interface to the HIDAPI library.

ipaddress

IPv4/IPv6 manipulation library

cryptography

cryptography is a package which provides cryptographic recipes and primitives to Python developers.

yact

Yet Another Config Tool

fortiosapi

Python modules to use Fortigate APIs

cffi

Foreign Function Interface for Python calling C code.

pycparser

C parser in Python

friend

Python utility library

py-zabbix

Python module to work with zabbix.

bcrypt

Modern password hashing for your software and your servers

ansible

Radically simple IT automation

pycrypto-on-pypi

Cryptographic modules for Python.

Version usage of PyNaCl

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

1.4.0

93.45%

1.3.0

4.58%

1.2.1

1.52%