EBookDroid is an open source (GPL'ed) document viewer for Android based on the VuDroid code base.


PDFTool is described as 'Edit your PDF files quickly and intuitively. Open, edit, save or convert PDF files with PDFTool – it’s up to you' and is a PDF Reader in the office & productivity category. There are more than 50 alternatives to PDFTool for a variety of platforms, including Windows, Mac, Web-based, Android and Linux apps. The best PDFTool alternative is SumatraPDF, which is both free and Open Source. Other great apps like PDFTool are Okular, Foxit PDF Reader, Xournal++ and Evince.
EBookDroid is an open source (GPL'ed) document viewer for Android based on the VuDroid code base.


PDFChef enhances document management with cross-platform support on PC, Mac, iOS, and browsers. It offers text-editing, page rearranging, conversion tools, and cloud-based sharing. Supporting various file formats, it also enables users to add signatures directly to PDFs for swift document finalization.




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.






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.
PDF X is a productive PDF reader & editor for Windows. It's powerful for users to view, print, edit, and annotate Adobe Acrobat PDFs.




Xreader is a document viewer capable of displaying multiple and single page document formats like PDF and Postscript.
Take control of the way your ePubs display. Hyphen comes packed with a ton of options for custom colors, fonts, font sizes, line heights, paragraph indentations, margins - ...well, you get the idea. You can even use styling on a per-book basis.




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




Jumpdf is a keyboard-focused PDF viewer for documents where one needs to jump between different sections of the document frequently.

