*WSGI-compatible web servers.*

*[bjoern](https://pypi.python.org/pypi/bjoern) - Asynchronous, very fast and written in C.

*[fapws3](http://www.fapws.org/) - Asynchronous (network side only), written in C.

*[gunicorn](https://pypi.python.org/pypi/gunicorn) - Pre-forked, partly written in C.

*[meinheld](https://pypi.python.org/pypi/meinheld) - Asynchronous, partly written in C.

*[netius](https://github.com/hivesolutions/netius) - Asynchronous, very fast.

*[rocket](https://pypi.python.org/pypi/rocket) - Multi-threaded.

*[bjoern](https://github.com/jonashaag/bjoern) - Asynchronous, very fast and written in C.

*[gunicorn](https://github.com/benoitc/gunicorn) - Pre-forked, partly written in C.

*[uWSGI](https://uwsgi-docs.readthedocs.io/en/latest/) - A project aims at developing a full stack for building hosting services, written in C.

*[waitress](https://waitress.readthedocs.io/en/latest/) - Multi-threaded, powers Pyramid.

*[Werkzeug](http://werkzeug.pocoo.org/) - A WSGI utility library for Python that powers Flask and can easily be embedded into your own projects.

*[waitress](https://github.com/Pylons/waitress) - Multi-threaded, powers Pyramid.

*[werkzeug](https://github.com/pallets/werkzeug) - A WSGI utility library for Python that powers Flask and can easily be embedded into your own projects.

*Libraries for extracting web contents.*

*[Haul](https://github.com/vinta/Haul) - An Extensible Image Crawler.

*[html2text](https://github.com/Alir3z4/html2text) - Convert HTML to Markdown-formatted text.

*[lassie](https://github.com/michaelhelmick/lassie) - Web Content Retrieval for Humans.

*[micawber](https://github.com/coleifer/micawber) - A small library for extracting rich content from URLs.

*[newspaper](https://github.com/codelucas/newspaper) - News extraction, article extraction and content curation in Python.

*[python-goose](https://github.com/grangier/python-goose) - HTML Content/Article Extractor.

*[python-readability](https://github.com/buriy/python-readability) - Fast Python port of arc90's readability tool.

*[requests-html](https://github.com/kennethreitz/requests-html) - Pythonic HTML Parsing for Humans.

*[sanitize](https://github.com/Alir3z4/python-sanitize) - Bringing sanity to world of messed-up data.

*[sumy](https://github.com/miso-belica/sumy) - A module for automatic summarization of text documents and HTML pages.

*[textract](https://github.com/deanmalmgren/textract) - Extract text from any document, Word, PowerPoint, PDFs, etc.

*[toapi](https://github.com/gaojiuli/toapi) - Every web site provides APIs.

*Libraries to automate data extraction from websites.*

*[cola](https://github.com/chineking/cola) - A distributed crawling framework.

*[Demiurge](https://github.com/matiasb/demiurge) - PyQuery-based scraping micro-framework.

*[feedparser](http://pythonhosted.org/feedparser/) - Universal feed parser.

*[Grab](http://grablib.org/) - Site scraping framework.

*[MechanicalSoup](https://github.com/hickford/MechanicalSoup) - A Python library for automating interaction with websites.

*[feedparser](https://pythonhosted.org/feedparser/) - Universal feed parser.

*[grab](https://github.com/lorien/grab) - Site scraping framework.

*[MechanicalSoup](https://github.com/MechanicalSoup/MechanicalSoup) - A Python library for automating interaction with websites.

*[portia](https://github.com/scrapinghub/portia) - Visual scraping for Scrapy.

*[pyspider](https://github.com/binux/pyspider) - A powerful spider system.

*[RoboBrowser](https://github.com/jmcarp/robobrowser) - A simple, Pythonic library for browsing the web without a standalone web browser.

*[Scrapy](https://scrapy.org/) - A fast high-level screen scraping and web crawling framework.

*[robobrowser](https://github.com/jmcarp/robobrowser) - A simple, Pythonic library for browsing the web without a standalone web browser.

*[scrapy](https://scrapy.org/) - A fast high-level screen scraping and web crawling framework.

*Libraries for working with WebSocket.*

*[AutobahnPython](https://github.com/crossbario/autobahn-python) - WebSocket & WAMP for Python on Twisted and[asyncio](https://docs.python.org/3/library/asyncio.html).

*[Crossbar](https://github.com/crossbario/crossbar/) - Open-source Unified Application Router (Websocket & WAMP for Python on Autobahn).

*[autobahn-python](https://github.com/crossbario/autobahn-python) - WebSocket & WAMP for Python on Twisted and[asyncio](https://docs.python.org/3/library/asyncio.html).

*[crossbar](https://github.com/crossbario/crossbar/) - Open-source Unified Application Router (Websocket & WAMP for Python on Autobahn).

*[django-channels](https://github.com/django/channels) - Developer-friendly asynchrony for Django.

*[django-socketio](https://github.com/stephenmcd/django-socketio) - WebSockets for Django.

*[WebSocket-for-Python](https://github.com/Lawouach/WebSocket-for-Python) - WebSocket client and server library for Python 2 and 3 as well as PyPy.