Xpdf is a free PDF viewer and toolkit, including a text extractor, image converter, HTML converter, and more. Most of the tools are available as open source.

Merge PDF is described as 'User friendly PDF Reader. It is fully compatible with PDF file formats. It is a great value in comparison to other PDF Readers. It is part of Merge Soft Office. Now, Merge Soft Office is built on true 64-bit technology and it is being developed in 32-bit as well' and is a PDF Reader in the office & productivity category. There are more than 50 alternatives to Merge PDF for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best Merge PDF alternative is SumatraPDF, which is both free and Open Source. Other great apps like Merge PDF are Okular, Foxit PDF Reader, Evince and MuPDF.
Xpdf is a free PDF viewer and toolkit, including a text extractor, image converter, HTML converter, and more. Most of the tools are available as open source.

Cloud-based PDF viewer and annotation tool for your browser. Perfect for Chromebook 1:1 schools. View, export, print and share your PDF files straight from your browser. Kami works on all browsers and works best with Google Chrome.

SlimPDF Reader is a high quality PDF viewer that is only 1.5MB in size. Features and benefits:


PDF Reader Air is the ideal app for anyone who works with PDFs in the office or at home. Optimizing your work quality and productivity couldn’t be easier!.





BePDF is a PDF viewer for the BeOS, Haiku & Zeta. Besides viewing, it supports annotating and user-defined bookmarking for unencrypted PDFs. It's fully localized for 20 languages at the moment with additional languages being easily added via text files.
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The Flipping PDF Reader allows to read PDF documents in user friendly interface with flipping book effect. Good looking and convenient alternative for Adobe PDF Reader.

Altarsoft PDF Reader is a program for viewing and editing PDF files.
Main Features:




There is no PDF document that cannot be opened for viewing with a reader or viewer. There are many PDF readers to choose from, and more and more are paid now. If you want to avoid paying for software, Speedpdf Reader is a good free PDF reader for you.




An attorney who deals with a lot of PDFs set himself with the task of finding a way to preview the PDFs in Windows Explorer (much like Cover Flow view already does in Mac OS X) without actually opening them.
