NLTK (Natural Language Toolkit) is a powerful library in Python that provides easy-to-use interfaces to over 50 corpora and lexical resources, including WordNet.
BeautifulSoup is a Python library designed to parse HTML and XML documents. It simplifies tasks like iterating and searching HTML elements by attributes.
Visualizing a binary tree can help in understanding its structure and the relationships between its nodes. It is particularly useful for debugging problems with complex Binary Trees.