Skim

Skim is a PDF reader and note-taker for OS X.

22 Alternatives To Skim

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Adobe Acrobat DC

Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
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Apple Mail

There’s big news attached.

Cool Reader

Fast and small cross-platform eBook reader for desktops and handheld devices
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Document Viewer

Document Viewer is a highly customizable document viewer for Android. - SufficientlySecure/document-viewer

Evince

Evince is a document viewer for multiple document formats: PDF, Postscript, djvu, tiff, dvi, XPS…
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Foxit Reader

Foxit Reader is a free and light-weight multi-platform PDF document viewer.

Gaze

Gaze lets you watch videos with a partner in perfect synchrony.

Glance

Glance Networks integrated cobrowsing, screen sharing, agent video, mobile showcasing and more provide immediate improvement in CES and customer experience.
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Jarnal

Jarnal is an open-source application for notetaking, sketching, keeping a journal, making a…

MarginNote

A brand new e-reader to better study and digest your books
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MuPDF

MuPDF is a lightweight PDF and XPS viewer.

Nitro Reader

Nitro’s PDF Reader lets you view PDFs, create PDF files, collaborate and review, fill and save forms, add text to pages, sign PDF files, and more. Download Free – No fine print and no credit required.
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NoteLab

NoteLab brings the power of digital note taking to Linux, Windows, Mac OS X, and Solaris.

NotesHolder

NotesHolder lets you quickly type in any piece of information so that you can easily find it when…

OneNote

Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.

PDF Reader X

PDF Reader X is a nest in the class PDF reader, PDF annotator and PDF editor for the Mac OS X operating systems.

PDF-XChange Editor

The smallest, fastest, most feature-rich PDF editor/viewer available

PDF-XChange Viewer

PDF-XChange Viewer is an alternative viewer for PDF files that enables you to view and annotate PDF…
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Sumatra PDF

Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.

Xodo

Xodo is the ultimate cross-platform PDF viewer and annotator. And it’s 100% free.
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calibre

Ebook manager, viewer & converter
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xournal

Lightweight notetaking and sketching app.