Apps similar to PDF4QT include SumatraPDF, which is free and open source. Other options are Okular, Foxit PDF Reader, PDF Arranger and PDFgear. There's no shortage of PDF Editors like PDF4QT, with more than 100 alternatives for Windows, Mac, Linux, the web and Android.
Atril is a simple multi-page document viewer. It can display and print PostScript (PS), Encapsulated PostScript (EPS), DJVU, DVI, XPS and Portable Document Format (PDF) files. When supported by the document, it also allows searching for text, copying text to the clipboard...
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
United States
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.
China
Zathura is a highly customizable and functional document viewer. It provides a minimalistic and space saving interface as well as an easy usage that mainly focuses on keyboard interaction.
Germany
EU
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...
Bangladesh
Privacy-first, offline PDF editor for Android. Merge, split, compress, convert and annotate PDFs — 100% on-device, no internet required.
India
DocInspector is a professional, offline-first document processing and privacy-auditing application designed for legal, financial, and corporate teams. It enables users to clean, repair, and bundle large volumes of documents locally without relying on cloud services.
Moldova
Trevnoctilla lets you edit, merge, split, compress, and annotate PDFs directly in your browser—no downloads or installations required. Fast, secure, and completely free.
A simple PDF Reader built using Electron and PDF.js.
Engineered for large CAD and construction drawing PDFs, this local software offers tenfold faster markup, instant preview, text editing, rapid search, lossless PDF save, export at up to 600 DPI, full compatibility with standard viewers, auto-fit print options, and privacy for secure projects.
LithuaniaEU
PDF Chain is a graphical user interface for PDFtk. The GUI supports all common features of the command line tool in a comfortable way.
Versatile PDF solution for Windows with editing, markup, batch creation from Office and CAD files, 3D PDF, OCR, forms, advanced organization, custom measurement, real-time collaboration, scripting, security, file comparison, tablet support, and integration features.
United States
South Africa
