Smart Game Format parser library for Python

http://gotools.sourceforge.net/sgflib/

Python 3 port of sgmllib

https://pypi.org/project/sgmllib3k/

Python Package for Manipulation 2D Geospatial Geometry

https://pypi.org/project/shapely/

Detect what shell the current Python executable is running in

https://github.com/sarugaku/shellingham

Automagic shell tab completion for Python CLI applications

https://docs.iterative.ai/shtab/ https://github.com/iterative/shtab

Simple, fast, extensible JSON encoder/decoder

https://github.com/simplejson/simplejson

Sans-io socks proxy client/server library/framework

https://pypi.python.org/pypi/siosocks

Python to C and C++ bindings generator

http://www.riverbankcomputing.co.uk/software/sip/

Python 2 and 3 compatibility utilities

https://github.com/benjaminp/six

Translate plain ASCII punctuation into smart typographic HTML

https://github.com/leohemsted/smartypants.py

Sliding-window memory map manager

https://smmap.readthedocs.io/en/latest/ https://github.com/gitpython-developers/smmap

Sniff out which async library your code is running under

https://github.com/python-trio/sniffio

Snowball stemming library collection for Python

https://pypi.org/project/snowballstemmer/

Sans-I/O implementation of SOCKS4, SOCKS4A, and SOCKS5

https://github.com/sethmlarson/socksio

Python Sorted Container Types: SortedList, SortedDict, and SortedSet

http://www.grantjenks.com/docs/sortedcontainers/

CSS4 selector implementation for BeautifulSoup

https://github.com/facelessuser/soupsieve

SPARQL endpoint interface to Python

https://pypi.org/project/SPARQLWrapper/

Common interface to speech synthesis

http://devel.freebsoft.org/speechd

Command line interface for testing internet bandwidth

https://github.com/sivel/speedtest-cli

Python documentation generator

https://www.sphinx-doc.org/

Sphinx extension that automatically documents argparse

https://github.com/ribozz/sphinx-argparse

Sphinx API documentation generator

https://sphinx-autoapi.readthedocs.io/

Type hints (PEP 484) support for the Sphinx autodoc extension

https://github.com/agronholm/sphinx-autodoc-typehints

Modern skeleton for Sphinx themes

https://github.com/pradyunsg/sphinx-basic-ng

Add a copy button to each of your code cells

https://github.com/executablebooks/sphinx-copybutton

Add inline tabbed content to your Sphinx documentation

https://github.com/pradyunsg/sphinx-inline-tabs

Sphinx extension for linking to your project's issue tracker

https://github.com/sloria/sphinx-issues

Sphinx extension for rendering tables written in markdown

https://github.com/ryanfox/sphinx-markdown-tables

Wrap README-only projects in a dynamic Sphinx shell

https://github.com/stephenmcd/sphinx-me/

Sphinx extension for building self-hosted versioned docs (zrepl fork)

https://github.com/zrepl/sphinx-multiversion

Mobile-friendly py-sphinx theme

https://github.com/readthedocs/sphinx_rtd_theme

Sphinx Adadomain Extension

https://bitbucket.org/tkoskine/sphinxcontrib-adadomain

Extension which outputs Apple help books

https://www.sphinx-doc.org/

Sphinx Autoprogram Extension

https://github.com/sphinx-contrib/autoprogram

Sphinx extension for BibTeX style citations

https://github.com/mcmtroffaes/sphinxcontrib-bibtex

Sphinx/BitBucket integration

http://www.doughellmann.com/projects/sphinxcontrib-bitbucket/

Sphinx extension which outputs Devhelp document

https://www.sphinx-doc.org/

Sphinx Fulltoc Extension

https://pypi.org/project/sphinxcontrib-fulltoc/

Sphinx extension which renders HTML help files

https://www.sphinx-doc.org/

Sphinx domain for HTTP APIs

http://bitbucket.org/birkenfeld/sphinx-contrib/

Sphinx integration with different issue trackers

https://github.com/ignatenkobrain/sphinxcontrib-issuetracker

Sphinx extension which renders display math in HTML via JavaScript

https://www.sphinx-doc.org/

Organize changelog directives in Sphinx docs

https://github.com/davidism/sphinxcontrib-log-cabinet

Sphinx extension that parses both NumPy and Google style docstrings

https://pypi.org/project/sphinxcontrib-napoleon/

News Feed extension for Sphinx

https://pypi.org/project/sphinxcontrib-newsfeed/

Sphinx extension to include program output

http://pythonhosted.org/sphinxcontrib-programoutput/

Sphinx extension which outputs QtHelp document

http://sphinx-doc.org/

Sphinx extension which outputs serialized HTML files (json and pickle)

https://www.sphinx-doc.org/

Sphinx extension for converting SVG to PDF

https://github.com/missinglinkelectronics/sphinxcontrib-svg2pdfconverter

RST directive for injecting a Towncrier-generated changelog draft

https://github.com/sphinx-contrib/sphinxcontrib-towncrier