LiquidText offers a fast, natural way to review, gather, and organize information across all your docs: then apply the results to writing reports or simply studying. Pull out key facts and connect them together




PDF4QT is described as 'Open-source PDF viewer/editor using Qt framework with C++ library, multithreading, hardware rendering, encryption, text layout, and form tools' and is a PDF Reader in the office & productivity category. There are more than 100 alternatives to PDF4QT for a variety of platforms, including Windows, Linux, Mac, Web-based and Android apps. The best PDF4QT alternative is SumatraPDF, which is both free and Open Source. Other great apps like PDF4QT are Okular, Foxit PDF Reader, PDF Arranger and Evince.
LiquidText offers a fast, natural way to review, gather, and organize information across all your docs: then apply the results to writing reports or simply studying. Pull out key facts and connect them together




A feature-rich, privacy-focused PDF app built with Jetpack Compose and Material 3. View, edit, and manage PDFs with 12 powerful tools including merge, split, compress, rotate, lock/unlock, and more. Supports bookmarks, table of contents, full-text search, and auto-scroll for...




Privacy-first, offline PDF editor for Android. Merge, split, compress, convert and annotate PDFs — 100% on-device, no internet required.




Provides editing of text, images, and objects in PDFs, annotation options, OCR for scanned files, conversion to multiple formats, form filling and signing, page management, merging and splitting, cloud integration, camera to PDF functionality, and sharing tools.




Trevnoctilla lets you edit, merge, split, compress, and annotate PDFs directly in your browser—no downloads or installations required. Fast, secure, and completely free.
LibreSign is a web application for electronic signatures (e-Sign) that offer the possibility of signing documents online with security and agility.



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.

With PDFill you can create, fill, delete and submit PDF form fields; insert new formatted text, check, image, hyperlink, whiteout, highlight, drawing, comment and annotation anywhere in the document; save, print or email the filled and password-protected PDF; save and resume...







A simple PDF document viewer, in the lines of Evince but without using the Gnome libraries. ePDFView is a free lightweight PDF document viewer using Poppler and GTK+ libraries.

Bluebeam Revu delivers award-winning PDF creation, editing, markup and collaboration technology to Windows desktop and tablet users. Create and navigate smart, information-rich document sets from converted Microsoft Office and CAD files.

