Browse free open source C PDF Editors and projects below. Use the toggles on the left to filter open source C PDF Editors by OS, license, language, programming language, and project status.

  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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    Crowdtesting That Delivers | Testeum

    Unfixed bugs delaying your launch? Test with real users globally – check it out for free, results in days.

    Testeum connects your software, app, or website to a worldwide network of testers, delivering detailed feedback in under 48 hours. Ensure functionality and refine UX on real devices, all at a fraction of traditional costs. Trusted by startups and enterprises alike, our platform streamlines quality assurance with actionable insights. Click to perfect your product now.
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  • 1
    Vanilla.PDF

    Vanilla.PDF

    Cross-platform SDK for creating and modifying PDF documents

    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.
    Downloads: 7 This Week
    Last Update:
    See Project
  • 2

    PDF Version Converter

    Convert PDF versions, so old software can still be used.

    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.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 3
    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
    Downloads: 1 This Week
    Last Update:
    See Project
  • 4
    eLectrix PDF Viewer
    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.
    Downloads: 1 This Week
    Last Update:
    See Project
  • The Ultimate Quiz Maker & Engagement Platform Icon
    The Ultimate Quiz Maker & Engagement Platform

    Powering publishers, brands, and sports teams with 30+ interactive content types. Maximize engagement and revenue with Riddle.

    Riddle is an online platform for creating interactive content such as quizzes, surveys, personality tests, prediction games, and leaderboards. Our customers create content on our platform and then embed it on their website. The goal? Increased engagement, lead generation, segmentation, and content monetization - all 100% GDPR compliant.
    Try for free
  • 5
    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.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 6
    This program implements a Postscript/PDF viewer for GGI.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    The project has moved to Sourceforge: http://sourceforge.net/projects/electrix/.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    Converter from FB2 to PDF format. Useful for ebook readers with bad or missing FB2 support.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    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.
    Downloads: 0 This Week
    Last Update:
    See Project
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    Secure remote access solution to your private network, in the cloud or on-prem.

    Deliver secure remote access with OpenVPN.

    OpenVPN is here to bring simple, flexible, and cost-effective secure remote access to companies of all sizes, regardless of where their resources are located.
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  • 10
    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...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    frmware for mp4 with jz47xx, sc8600 ... with more ebook feature
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    A (batch) html to pdf converter based on Webkit.
    Downloads: 0 This Week
    Last Update:
    See Project
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