Beautiful Soup is a Python library for pulling data out of HTML and XML files. It provides Pythonic idioms for iterating, searching, and modifying the parse tree, making it easy to extract information from web pages.

Requests is a simple HTTP library for making web requests in Python. While not a dedicated web scraping library, it is often used in conjunction with other tools for fetching web pages and handling HTTP requests.

Scrapy is an open-source and collaborative web crawling framework for Python. It provides a set of pre-defined rules for navigating and extracting data from websites, making it a powerful tool for large-scale web scraping.

Selenium is a web testing framework that allows automated testing of web applications. It can also be used for web scraping by automating browsers, enabling interaction with dynamic web content rendered using JavaScript.

LXML is a high-performance library for processing XML and HTML in Python. It provides a clean and Pythonic API for parsing and modifying HTML and XML documents, making it useful for web scraping tasks.

MechanicalSoup is a Python library for automating the interaction with websites. It is built on top of Requests and BeautifulSoup, providing a convenient way to fill out forms and perform other web-related tasks.

html5lib is a Python library for parsing HTML5 documents. It ensures compliance with the HTML5 specification and can be used for web scraping tasks that involve parsing and manipulating HTML documents.

PyQuery is a Python library that brings jQuery to the Python world. It allows users to make jQuery queries on XML documents, making it a convenient choice for parsing and manipulating HTML content.

Grab is a Python web scraping framework designed to be simple, easy to use, and extensible. It provides a set of tools for building web scrapers and handling various tasks related to web data extraction.

Requests-HTML is an HTML parsing library for Python that is built on top of Requests. It simplifies the process of extracting information from HTML documents by providing a user-friendly API.