Open Source C PDF Editors

Sumatra PDF is a free PDF, eBook (ePub, Mobi), XPS, DjVu, CHM, Comic Book (CBZ and CBR) viewer for Windows. Sumatra PDF is powerful, small, portable and starts up very fast. Simplicity of the user interface has a high priority. Portable version is a single executable, can be run from USB drive and doesn't write to registry. For best results use the latest release available as that's what I use and test with. If things don't compile, first make sure you're using the latest version of Visual Studio. To compile you need Visual Studio 2019 16.6 or later. Free Community edition works.

Sioyek is a free, open-source PDF viewer designed specifically for reading research papers, textbooks, and technical documents. It emphasizes fast navigation, keyboard-driven controls, and efficient access to references within lengthy publications. Its Smart Jump functionality allows readers to navigate between citations, figures, and their corresponding references. Users can preview referenced content without permanently leaving their current reading position. The application supports searchable highlights, bookmarks, and named locations for organizing research. Its portal system enables simultaneous viewing of connected document sections and references. Available for Windows, macOS, and Linux, Sioyek combines advanced document navigation with a lightweight, customizable reading interface.

Vanilla.PDF is a modern, high-performance, open-source C++17 SDK designed for creating, editing, signing, and analyzing PDF documents across multiple platforms. It requires no external runtime dependencies, making it lightweight and ideal for embedding into desktop applications, servers, or automation pipelines. The SDK offers full cross-platform support including Windows, Linux, macOS, and Android, with builds available for major compilers and architectures. Vanilla.PDF supports advanced PDF features such as adding CMS (PKCS#7) digital signatures, modifying content streams and metadata, and working with encryption and permissions based on standard PDF security models. It includes tools for parsing PDF internals like cross-reference tables and objects, providing fine-grained document analysis capabilities. The project is unit-tested with continuous integration pipelines, supporting sanitizers for enhanced code quality and stability.

iTeXMac is an integrated software which components are: - a text editor dedicated to D.E. Knuth's TeX typesetting system - a frontend to a teTeX like distribution, that includes TeX engines and tools - a PDF viewer

frmware for mp4 with jz47xx, sc8600 ... with more ebook feature

Converter from FB2 to PDF format. Useful for ebook readers with bad or missing FB2 support.

A (batch) html to pdf converter based on Webkit.

This a GUI for calling Ghostscript to change PDF versions. If you have older software that needs PDF files in say 1.4 format, but your PDF file is 1.6, this is your answer. Select your file, choose which version and convert it. Requires Gnome 2.22.3 or better*, GTK 2.0 and of course Ghostscript. * I haven't tested on newer version of Gnome.

This program implements a Postscript/PDF viewer for GGI.

The project has moved to Sourceforge: http://sourceforge.net/projects/electrix/.

eLectrix is an application to view Portable Document Format (PDF) files. The program is written in the C programming language, using GTK+ for the user interface and poppler for rendering pages.

gPDFText is a text editor for GTK+ that opens PDF documents for ebook readers, converts the text contents into plain ASCII text, restores the original paragraphs and removes unwanted line breaks to allow easier zooming on the reader.

gv allows a user to view and navigate through PostScript and PDF documents on an X display by providing a user interface for the ghostscript interpreter. It is based on an older viewer called Ghostview by Tim Thiesen.

UFO, the Ultimate File Opener opens a file from the terminal, like you have used a doubleclick on the given filename. For example "open docu.pdf" starts your favourite PDF-Reader and displays docu.pdf in it...