Open Source Java HTML/XHTML Software for Windows

jsoup is a Java library for working with real-world HTML. It provides a very convenient API for fetching URLs and extracting and manipulating data, using the best of HTML5 DOM methods and CSS selectors. jsoup implements the WHATWG HTML5 specification, and parses HTML to the same DOM as modern browsers do. jsoup is designed to deal with all varieties of HTML found in the wild; from pristine and validating, to invalid tag-soup; jsoup will create a sensible parse tree. The parser will make every attempt to create a clean parse from the HTML you provide, regardless of whether the HTML is well-formed or not. You have HTML in a Java String, and you want to parse that HTML to get at its contents, or to make sure it's well formed, or to modify it. The String may have come from user input, a file, or from the web.

CSSBox is an (X)HTML/CSS rendering engine written in pure Java. Its primary purpose is to provide a complete information about the rendered page suitable for further processing. However, it also allows displaying the rendered document.

The Nheengatu Project is a Java library that provides HTML markup abstraction allowing you to reutilize it to generate PDF files, OpenOffice documents, image files, etc. The goal of this project is to maximize the use of HTML markup procedures.

A set of tools and libraries (available for C# and Java) that help with writing fiction and non-fiction drafts and then produce ePUB and Kindle eBooks. With these tools/libraries, drafts, written in HTML, can be analyzed to help with writing. such as generating outlines and associating scenes with keywords. When done writing, the tools/libraries can be used to make publishable eBook, automatically producing additional material, such as Table of Contents and Title Pages.

jStyleParser is a CSS parser written in Java. It has its own application interface that is designed to allow an efficient CSS processing in Java and mapping the values to the Java data types. It is also able to apply the parsed style sheets to a DOM that represents an HTML or XML document and to compute the resulting style of the individual document elements. It supports CSS 2.1 and a large subset of CSS3.

This library contains utility classes such as a converter from plain text to HTML (for safe inclusion of user-supplied text into web pages, avoiding XSS attacks, etc.), converters from binary to hex representation, and similar functions