PDFx (by AlexandrosGounis) is described as 'A free-floating 2D Canvas for processing multiple PDF files simultaneously' and is a PDF Reader in the office & productivity category. There are more than 50 alternatives to PDFx (by AlexandrosGounis) for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best PDFx (by AlexandrosGounis) alternative is SumatraPDF, which is both free and Open Source. Other great apps like PDFx (by AlexandrosGounis) are Okular, Foxit PDF Reader, Xournal++ and PDFgear.
Optical recognition software boasting unmatched text accuracy converts scanned documents to editable Word, Excel, or searchable PDFs while preserving layout. Supports 190 languages, simplifies processes with automated tasks, and includes PDF editing tools.
Russia
Sioyek is a PDF viewer with minimal interface optimized for reading research papers and technical books.
United States
PDF viewer for macOS supports scientific papers, annotations, highlights, bookmarks, split view, exporting notes, AppleScript, multiple annotation types, bibliography integration, full-screen, search, and compatibility with various macOS versions.
Native macOS app for viewing, annotating, and editing images and PDFs, featuring tools for cropping, rotating, resizing images, rearranging pages, full-screen viewing, markup, document merging, batch conversion, and export in multiple formats.
United States
Simple Android PDF viewer based on pdf.js and content providers. The app doesn't require any permissions.
Canada
Xodo is the ultimate cross-platform PDF viewer and annotator. Powerful, fast, and optimized for all phones and tablets, Xodo makes it easy to access, edit, share, sync, manage, sign, and more.
Canada
Create, Convert, Review and Edit PDF Documents on Windows, macOS, and Linux.
United States
Document Viewer is a highly customizable document viewer for Android, fork of the last GPL version of EBookDroid .
Germany
EU
A document viewer for the GNOME desktop. You can view, search or annotate documents in many different formats.
United States
PdfDing is a browser based PDF manager, viewer and editor that you can host yourself. It offers a seamless user experience on multiple devices. It's designed be to be minimal, fast, and easy to set up using Docker.
SpeedyNote is a fast, open-source note-taking application designed for stylus users who need iPad-quality annotation on budget hardware. Built with native C++ and Qt, it delivers 360Hz stylus input on hardware as modest as an Intel Celeron N4000 at 1.
