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, Linux, Android 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 PDF-XChange Editor.
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.
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.
Czechia
EU
A document viewer for the GNOME desktop. You can view, search or annotate documents in many different formats.
United States
United States
qpdfview is a Qt-based tabbed document viewer using the Poppler library for PDF rendering and CUPS for printing. Support for the DjVu and PostScript formats can be added via plugins.
GermanyEU
PDF X is a productive PDF reader & editor for Windows. It's powerful for users to view, print, edit, and annotate Adobe Acrobat PDFs.
Canada
PDF Viewer Pro is a fast and beautiful app, allowing you to view, search, and annotate PDF documents with ease on your iPhone and iPad.
AustriaEU
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...
Read, edit, annotate, and sign PDF documents with built-in AI features like summarize and translate, OCR in 50+ languages, fill forms, export to major formats offline, apply watermarks, compress files, secure with passwords, and use text-to-speech on all major platforms.
Taiwan
Zathura is a highly customizable and functional document viewer. It provides a minimalistic and space saving interface as well as an easy usage that mainly focuses on keyboard interaction.
GermanyEU
Universal Viewer is an advanced file viewer for wide range of formats. Supported file formats are:
Russia
Besides exceptionally fast launching and displaying speed, Gaaiho Reader is reliable in printing, filling forms annotating documents and adding bookmarks.
Taiwan
