PDF X is a productive PDF reader & editor for Windows. It's powerful for users to view, print, edit, and annotate Adobe Acrobat PDFs.




Qoppa PDF Studio is described as 'Create, Convert, Review and Edit PDF Documents on Windows, macOS, and Linux' and is a popular PDF Reader in the office & productivity category. There are more than 100 alternatives to Qoppa PDF Studio for a variety of platforms, including Windows, Mac, Web-based, iPhone and Android apps. The best Qoppa PDF Studio alternative is Okular, which is both free and Open Source. Other great apps like Qoppa PDF Studio are Foxit PDF Reader, PDF-XChange Editor, MuPDF and Evince.
PDF X is a productive PDF reader & editor for Windows. It's powerful for users to view, print, edit, and annotate Adobe Acrobat PDFs.




Take beautiful handwritten notes or annotate PDFs on your iPad, and now even on your iPhone. With the new Noteshelf you can do all of the familiar, like type notes, record audio, draw shapes, sketch, sign contracts, fill forms, along with a lot of new, like add bookmarks, create...




With GoodReader on your iPhone, iPod Touch or iPad, you can read virtually anything, anywhere. Books, movies, maps, pictures; GoodReader puts it all in a single app, right in your pocket.




Edit, annotate, and convert PDFs with OCR capabilities, AI-assisted tools for summaries and translations. It supports file protection and offers 2GB of cloud storage for secure management.




Free (and open source) editor for manipulating PDF documents. GUI version + commandline interface. Scripting is used to a great extent in editor and almost anything can be scripted, it is possible to create own scripts or plugins.


Simple Android PDF viewer based on pdf.js and content providers. The app doesn't require any permissions.




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.

Open-source PDF viewer and editor using Qt framework, featuring hardware-accelerated rendering, encryption, multithreading, text-to-speech, annotation tools, form filling, high-res monitor support, document compression, audio book conversion, and signature validation.


Ashampoo PDF Pro 3 is a software solution for managing and editing PDF documents. It offers tools for creating, converting, editing, merging, and securing PDFs. The software allows users to create optimally sized documents for any device and offers encryption to protect...




PDF Professional is a feature-rich PDF solution for reading, annotating, form-filling, editing, signing, converting PDFs on your Mac, iPhone and iPad.




Atril is a simple multi-page document viewer. It can display and print PostScript (PS), Encapsulated PostScript (EPS), DJVU, DVI, XPS and Portable Document Format (PDF) files. When supported by the document, it also allows searching for text, copying text to the clipboard...
The core product for PDF quality control (preflight), auto-correction and manual editing. This runs as a plug-in to Adobe Acrobat.