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.

KDAN PDF is described as 'All-in-one tool for editing, OCR, annotating, signing, converting, and redacting PDFs, featuring AI-powered document analysis and cross-device workflow support' and is a very popular PDF Reader in the office & productivity category. There are more than 100 alternatives to KDAN PDF for a variety of platforms, including Windows, Web-based, Mac, Linux and Android apps. The best KDAN PDF alternative is SumatraPDF, which is both free and Open Source. Other great apps like KDAN PDF are Okular, Foxit PDF Reader, PDF-XChange Editor and Evince.
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.

Yet another PDF Printer? Yes! This PDF Printer has the intention to be completely open source. Print to PDF, PDF/A, PDF/X, PNG, JPEG, TIF and text.




PassportPDF is a modern cloud infrastructure offering freemium microservices dedicated to addressing document management challenges of professional and general public users, with many productivity-oriented solutions: compression, conversion, OCR, content protection, digital...
PDF Pro is the complete online PDF solution, allowing professionals to get their PDF work done quickly and easily.




Xreader is a document viewer capable of displaying multiple and single page document formats like PDF and Postscript.
Orion PDF Author, a new and easier way to create multi-page PDF-format user guides, instruction manuals, and booklets.








Acrobat.com is a set of online services — file sharing and storage, a PDF converter, an online word processor, and web conferencing — you can use to create and share documents, communicate in real time, and simplify working with others.
With iAnnotate you can read, annotate, and share PDFs, Microsoft Office files, images and web pages!




Trevnoctilla lets you edit, merge, split, compress, and annotate PDFs directly in your browser—no downloads or installations required. Fast, secure, and completely free.
Free PDF tools in one place. Convert PDFs to and from multiple file formats, remove pages, merge PDFs, unlock password protected PDFs and more


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.



