Universal Viewer is an advanced file viewer for wide range of formats. Developed by UVViewSoft
License: Freemium
MuPDF is a free and open-source software framework written in C that implements a PDF, XPS, and EPUB parsing and rendering engine. It is used primarily to render pages into bitmaps, but also provides support for other operations such as searching and listing the table of contents and hyperlinks. Developed by Artifex Software, Inc.
License: Open Source
Universal Viewer is a versatile, open-source document viewer that supports a wide range of formats and offers extensive customization options, making it ideal for diverse use cases. In contrast, MuPDF is a lightweight, high-performance PDF viewer focused primarily on rendering and manipulating PDF documents, catering to users who prioritize speed and efficiency.