Free open-source web software for signing (alone or with others), organizing (merge, sort, rotate, delete, extract pages, ...), editing metadatas or compressing PDFs.




MorphPDF is described as 'Stop overpaying for PDF tools' and is a PDF Reader in the office & productivity category. There are more than 100 alternatives to MorphPDF for a variety of platforms, including Windows, Web-based, Mac, Linux and Android apps. The best MorphPDF alternative is SumatraPDF, which is both free and Open Source. Other great apps like MorphPDF are Okular, Foxit PDF Reader, Xournal++ and Evince.
Free open-source web software for signing (alone or with others), organizing (merge, sort, rotate, delete, extract pages, ...), editing metadatas or compressing PDFs.




Smallpdf is the first PDF Software you will actually like. The perfect gateway to productive, portable and cost-efficient document management solutions in your everyday life.




A document viewer for the GNOME desktop. You can view, search or annotate documents in many different formats.


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.







Document Viewer is a highly customizable document viewer for Android, fork of the last GPL version of EBookDroid .


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.




Read, annotate, and highlight PDFs, fill interactive forms with saved input, underline or strike through text, manage bookmarks, sync files from cloud services, and share documents. Compatible with Preview and Adobe Acrobat annotations, supporting extensive iOS features.




Nitro offers comprehensive PDF solutions for editing, creating, and converting, alongside OCR and e-signature tools. Supports Mac, Windows, and iOS, providing a user-friendly interface with industry-standard security features. Ideal as an Adobe Acrobat alternative.




Comprehensive solution for editing, signing, form filling, OCR scanning, commenting, converting, and redacting PDFs, with AI-driven analysis and content extraction, data export to spreadsheets, text-to-speech, seamless use across desktop and mobile, and batch processing.



