Okular is described as 'Multi-platform document viewer supporting PDF, comics, EPUB, images, and Markdown with annotation tools, sidebar navigation, and text-to-speech features' and is a very popular PDF Reader in the office & productivity category. There are more than 100 alternatives to Okular for a variety of platforms, including Windows, Mac, Android, Linux and iPhone apps. The best Okular alternative is SumatraPDF, which is both free and Open Source. Other great apps like Okular are Foxit PDF Reader, LibreOffice - Draw, Evince and MuPDF.
This free, open-source viewer for Windows supports multiple formats like PDF, eBooks (ePub, Mobi), CHM, and Comic Books (CBZ, CBR). Prioritizing simplicity and speed, it offers a lightweight, portable design with a minimalist interface, catering to users seeking fast and efficient document viewing.
Foxit Reader offers a lightweight PDF viewing experience across multiple platforms with features such as annotation, form filling, signing, cloud storage integration, collaborative review options, heightened security via Trust Manager, and organizational tools like Group Policy and XML Configuration.
Draw lets you produce anything from a quick sketch to a complex plan, and gives you the means to communicate with graphics and diagrams. With a maximum page size of 300cm by 300cm, Draw is a an excellent package for producing technical drawings, general posters, and much else.
Evince (or GNOME Document Viewer) is a document viewer for multiple document formats: PDF, Postscript, djvu, tiff, dvi, XPS, SyncTex support with gedit, comics books (cbr,cbz,cb7 and cbt) and others. See Supported Document Formats for details.
MuPDF offers a highly versatile PDF, XPS, and eBook interpreter, customizable as a renderer, viewer, or toolkit. Features include digital signatures, redactions, form filling, annotations, and page manipulation, ideal for mobile, eBooks, and embedded apps supporting Java, C++, and Python.
An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Kindle, Kobo, PocketBook, Linux and Android devices.
Seamlessly view, annotate, and collaborate on PDFs with freehand drawing and sticky notes. Utilize cloud storage for effortless access and upgrade for advanced editing and conversion to formats like Word and Excel.
Koodo Reader is an all-in-one e-book reader that can help you better manage and study your e-books. It's free and open-source.
Comprehensive solution for editing, signing, form filling, OCR scanning, commenting, converting, and redacting PDFs, with AI-driven analysis and content extraction, data export to spreadsheets, text-to-speech, seamless use across desktop and mobile, and batch processing.
Manage documents effortlessly, edit PDFs, create them from other formats, and e-sign anywhere. Secure sharing and comparison tools ensure smooth workflows and data protection. New AI Assistant offers quick document insights. Perfect for desktop and web platforms.
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Sumatra doesn't have comments and fill forms functionality as Okular does.