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.




PDFTool is described as 'Edit your PDF files quickly and intuitively. Open, edit, save or convert PDF files with PDFTool – it’s up to you' and is a PDF Reader in the office & productivity category. There are more than 50 alternatives to PDFTool for a variety of platforms, including Windows, Mac, Web-based, Android and Linux apps. The best PDFTool alternative is SumatraPDF, which is both free and Open Source. Other great apps like PDFTool are Okular, Foxit PDF Reader, Xournal++ and Evince.
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.




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


Create, Convert, Review and Edit PDF Documents on Windows, macOS, and Linux.




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.




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.

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.

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.




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.



A privacy-first, client-side PDF editor that runs in your browser. Edit, annotate, merge/split, compress to target sizes, OCR scanned PDFs, and convert files—no signup, no watermark.




The top AEC PDF app to markup and manage drawings and documents. Ideal for replacing pen and paper, avoid printing documents again by using our intuitive feature set that makes marking up a PDF easy. Open or create a new PDF, markup using our extensive array of tools, then save...



