Supercharge your paper reading: follow references, skim outline, jump to figures, cite and save.




Skim is described as 'PDF viewer and annotation tool for macOS supports scientific paper reading, note-taking, highlighting, bookmarks, multiple annotation types, and AppleScript' and is a popular PDF Reader in the office & productivity category. There are more than 100 alternatives to Skim for a variety of platforms, including Windows, Mac, Android, Linux and iPhone apps. The best Skim alternative is SumatraPDF, which is both free and Open Source. Other great apps like Skim are Okular, Foxit PDF Reader, Xournal++ and Evince.
Supercharge your paper reading: follow references, skim outline, jump to figures, cite and save.




TagNotate is a PDF viewer and annotator with the unique ability to assign tags to annotations - you can create as many different tags as you want, allowing you to associate with each annotation whatever kinds of information are important for you.




A feature-rich, privacy-focused PDF app built with Jetpack Compose and Material 3. View, edit, and manage PDFs with 12 powerful tools including merge, split, compress, rotate, lock/unlock, and more. Supports bookmarks, table of contents, full-text search, and auto-scroll for...




Notetaking and blackboard replacement application. Inspired by Xournal. Written in C++/Qt for Linux / Windows. It has the ability to annotate PDF files and has a few other options (e.g. markdown support).




AI powered productivity tool for reading, understanding and taking notes on PDFs and long websites. Users can search, summarise, extract and define keywords, ask google-search type questions and be taken straight to the answers.




Privacy-first, offline PDF editor for Android. Merge, split, compress, convert and annotate PDFs — 100% on-device, no internet required.





ezPDF Reader is a PDF viewer with some powerful features such as TTS (Text-to-Speech), annotations and PDF forms.




A simple PDF document viewer, in the lines of Evince but without using the Gnome libraries. ePDFView is a free lightweight PDF document viewer using Poppler and GTK+ libraries.

PrivatePDF is a free web tool that lets you make quick PDF edits from within your web browser, without uploading anything anywhere.




Revolutionize PDFs for free! Try PDFPro: advanced editing, annotating, converting, signing. Premium tools, cloud support, secure.



