pip install spambayes==1.1b3

Spam classification system

Source
Among fairly niche packages on PyPI.
Over 615 downloads in the last 90 days.

Commonly used with spambayes

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

dot2tex

A Graphviz to LaTeX converter

fastimport

VCS fastimport/fastexport parser

deluge

BitTorrent Client

pgpdump

PGP packet parser library

pykickstart

Python module for manipulating kickstart files

blivet

Python module for system storage configuration

rubber

Elasticsearch client with Django support.

nipy

A python package for analysis of neuroimaging data

xdot

Interactive viewer for Graphviz dot files

openopt

A python module for numerical optimization

wxPython

Cross platform GUI toolkit for Python, "Phoenix" version

pycryptopp

Python wrappers for a few algorithms from the Crypto++ library

pyparted

Python bindings for GNU parted

i3-py

tools for i3 users and developers

py3status

py3status: an extensible i3status wrapper written in python

rainbowstream

A smart and nice Twitter client on terminal.

howdoi

Instant coding answers via the command line

pygpgme

A Python module for working with OpenPGP messages

gmpy

GMP or MPIR interface to Python 2.4+ and 3.x

Version usage of spambayes

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

1.1b3

71.38%

1.1b2

16.42%

1.1b1

12.20%