parse5 is a fast and robust HTML parsing library for Node.js and browser environments. It allows developers to parse HTML documents into a structured format, enabling easy manipulation and traversal of the document tree. parse5 is particularly useful for projects that require handling HTML content, such as web scraping or transforming HTML documents. While parse5 is a strong choice for HTML parsing, there are several alternatives available in the ecosystem. Here are a few notable ones:

• cheerio is a popular library that provides a fast and flexible way to manipulate HTML and XML documents. It implements a subset of the jQuery core functionality, allowing developers to use familiar jQuery-like syntax to traverse and manipulate the document tree. Cheerio is particularly useful for server-side applications where you want to scrape or manipulate HTML without the overhead of a full browser environment. If you're looking for a lightweight and easy-to-use library for HTML manipulation, cheerio is an excellent choice.
• htmlparser2 is another fast and forgiving HTML/XML parser that is widely used in the Node.js ecosystem. It provides a streaming interface, making it efficient for parsing large documents. htmlparser2 is designed to be flexible and can handle malformed HTML, making it a good option for web scraping and other scenarios where the input HTML may not be well-formed. If you need a robust parser that can handle various HTML structures, htmlparser2 is worth considering.
• jsdom is a powerful library that simulates a web browser's environment in Node.js. It allows developers to create and manipulate a DOM as if they were working in a browser, making it ideal for testing and server-side rendering of web applications. jsdom is particularly useful when you need to run scripts or manipulate the DOM in a way that closely resembles a real browser environment. If your project requires a full DOM implementation with support for JavaScript execution, jsdom is the way to go.

To see how parse5 compares with cheerio, htmlparser2, and jsdom, check out the comparison: Comparing cheerio vs htmlparser2 vs jsdom vs parse5.