Adobe Acrobat Reader is described as 'View, annotate, and collaborate on PDFs, utilize cloud storage and freehand tools. Upgrade for editing and converting to other formats' and is a very popular PDF Reader in the office & productivity category. There are more than 100 alternatives to Adobe Acrobat Reader for a variety of platforms, including Windows, Mac, Web-based, Linux and Android apps. The best Adobe Acrobat Reader alternative is Evince, which is both free and Open Source. Other great apps like Adobe Acrobat Reader are SumatraPDF, Okular, Foxit PDF Reader and MuPDF.
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.
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.
United States
Ashampoo PDF Free is a software for opening, reading, and creating PDF files. It includes a built-in printer driver for generating PDFs from any Windows application, a compact and fast PDF reader, and the ability to fill out interactive and static forms.
Germany
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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.
CzechiaEU
pdfDocs integrates with business systems to efficiently assemble, secure and distribute documents in PDF and PDF/A format.
Australia
PDFLiner is the all-in-one online platform for working with PDF documents. Here, you can upload any PDF or Image and edit it in just a few seconds. With PDFLiner you edit your PDF files as well as sign them electronically and protect them with password and watermark if needed.
Universal Viewer is an advanced file viewer for wide range of formats. Supported file formats are:
Russia
In version 8, Google Chrome introduced a free PDF viewer, installed by default. While this plug-in lacks many features of the Adobe Acrobat Plug-in, it is much faster and lighter, and updates with the browser rather than an external utility.
United States
ezPDF Reader is a PDF viewer with some powerful features such as TTS (Text-to-Speech), annotations and PDF forms.
United States
xnotes is a handwriting-first notebook for phones and tablets, built for pen and stylus. Write, sketch and annotate with pressure-sensitive, variable-width ink, and nothing you draw is ever flattened.
India
Blazing fast PDF and portable eReader built on muPDF. Including the ability to save "highlights" and notes like on Kindle.
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