LyX is an open source document processor based on top of the LaTeX typesetting system. Developed by Matthias Ettrich
License: Open Source
TeX Live is a comprehensive LaTeX distribution that provides extensive customization and is ideal for technical writing, but has a steeper learning curve. In contrast, LyX offers a user-friendly WYSIWYG interface and is suitable for users who prefer an easier way to create documents without deep technical knowledge.