Apps similar to PDF4QT include SumatraPDF, which is free and open source. Other options are Okular, Foxit PDF Reader, PDF Arranger and PDFgear. There's no shortage of PDF Editors like PDF4QT, with more than 100 alternatives for Windows, Mac, Linux, the web and Android.
This free, open-source viewer for Windows supports multiple formats like PDF, eBooks (ePub, Mobi), CHM, and Comic Books (CBZ, CBR). Prioritizing simplicity and speed, it offers a lightweight, portable design with a minimalist interface, catering to users seeking fast and efficient document viewing.
Poland
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Multi-platform document viewer supporting PDF, ePub, comics, images, and Markdown with annotation, digital signature verification, tabbed interface, sidebar navigation, text selection, text-to-speech, magnifier, search, dark mode, and plugin support.
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Foxit Reader offers a lightweight PDF viewing experience across multiple platforms with features such as annotation, form filling, signing, cloud storage integration, collaborative review options, heightened security via Trust Manager, and organizational tools like Group Policy and XML Configuration.
United States
Small python-gtk application, which helps the user to merge or split pdf documents and rotate, crop and rearrange their pages using an interactive and intuitive graphical interface.
Read, edit, convert, merge, and sign PDF files across devices, for completely free and without signing up.
Singapore
Feature-rich PDF editor offering direct content editing, ABBYY OCR, viewing, annotation, form filling, PDF merging, compression, and encryption. Operates efficiently offline, requiring no registration and no ads, while providing privacy-focused features and convenient portability.
Canada
Koodo Reader is a powerful ebook reader designed to provide a simple and easy-to-use reading experience.
China
PDF24 Creator is free and feature-filled PDF creation, merging and conversion tool for Windows. Its unique feature among the free PDF printer tools is an editor, which allows to easily assemble, create and modify PDF files with Drag & Drop.
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Supports viewing and editing PDF annotations, displays multiple formats such as PDF, Postscript, DjVu, comic books, TIFF, DVI, XPS, remembers per-document zoom and position, features search, table-of-contents navigation, SyncTeX integration, and printing.
United States
PDFsam Basic is a free and open-source desktop application for splitting and merging PDF files. It runs entirely on your own computer, so your files are never uploaded anywhere and it works fully offline.
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MuPDF offers a highly versatile PDF, XPS, and eBook interpreter, customizable as a renderer, viewer, or toolkit. Features include digital signatures, redactions, form filling, annotations, and page manipulation, ideal for mobile, eBooks, and embedded apps supporting Java, C++, and Python.
United States
Manage documents effortlessly, edit PDFs, create them from other formats, and e-sign anywhere. Secure sharing and comparison tools ensure smooth workflows and data protection. New AI Assistant offers quick document insights. Perfect for desktop and web platforms.
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