Open Source C Formats and Protocols - Page 2

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

  • Share your screen instantly while on a phone call with CrankWheel for an engaging presentation. Icon
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  • 1

    Common Image Generator Interface (CIGI)

    Industry standard communication with compliant image generators.

    Software libraries and tools designed for implementation and testing of the Common Image Generator Interface (CIGI), an interface for communication between an image generator (IG) and host device in simulations.
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    Downloads: 120 This Week
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  • 2
    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: 8 This Week
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  • 3

    jpeg2pdf

    Create PDF from JPEG scans and photos

    Cross-platform command-line tool for creation of PDF documents from scans/photos of pages in JPEG (.jpg) format and the lightest weight ANSI C library to put multiple JPEG files into one PDF file. You can add handwritten comments to PDF scans (over original images) with xournal: http://xournal.sourceforge.net/ It supports graphics tablets and saves comments to PDFs as vector data.
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    Downloads: 45 This Week
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  • 4
    Libnodave is a library that provides the necessary functions to connect to and exchange data with Siemens S7 300/400 PLCs (200 family and S5 family now also supported). Can now also be used under Win32.
    Downloads: 35 This Week
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  • Apify is a full-stack web scraping and automation platform helping anyone get value from the web. Icon
    Apify is a full-stack web scraping and automation platform helping anyone get value from the web.

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  • 5
    Data Structures for PHP 7

    Data Structures for PHP 7

    An extension providing efficient data structures for PHP 7

    An extension providing specialized data structures as efficient alternatives to the PHP array. Highlights the API, performance and other benefits. PHP has one data structure to rule them all. The array is a complex, flexible, master-of-none, hybrid data structure, combining the behaviour of a list and a linked map. But we use it for everything, because PHP is pragmatic: “dealing with things sensibly and realistically in a way that is based on practical rather than theoretical considerations”. An array gets the job done. Unfortunately, with flexibility comes complexity. Collection is the base interface which covers common functionality like foreach, echo, count, print_r, var_dump, serialize, json_encode, and clone. Sequence describes the behavior of values arranged in a single, linear dimension. Some languages refer to this as a List. Documentation is available on php.net. You should also include the polyfill in your project for IDE integration.
    Downloads: 7 This Week
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  • 6
    Mozilla JPEG Encoder Project

    Mozilla JPEG Encoder Project

    Improved JPEG encoder

    MozJPEG improves JPEG compression efficiency achieving higher visual quality and smaller file sizes at the same time. It is compatible with the JPEG standard, and the vast majority of the world's deployed JPEG decoders. MozJPEG is compatible with the libjpeg API and ABI. It is intended to be a drop-in replacement for libjpeg. MozJPEG is a strict superset of libjpeg-turbo's functionality. All MozJPEG's improvements can be disabled at run time, and in that case it behaves exactly like libjpeg-turbo. MozJPEG is meant to be used as a library in graphics programs and image processing tools. We include a demo cjpeg command-line tool, but it's not intended for serious use. We encourage authors of graphics programs to use libjpeg's C API and link with MozJPEG library instead. Progressive encoding with "jpegrescan" optimization. It can be applied to any JPEG file (with jpegtran) to losslessly reduce file size.
    Downloads: 7 This Week
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  • 7
    Nokogiri

    Nokogiri

    Tool to work with XML and HTML from Ruby

    Nokogiri (鋸) makes it easy and painless to work with XML and HTML from Ruby. It provides a sensible, easy-to-understand API for reading, writing, modifying, and querying documents. It is fast and standards-compliant by relying on native parsers like libxml2 (C) and xerces (Java). Be secure-by-default by treating all documents as untrusted by default. Be a thin-as-reasonable layer on top of the underlying parsers, and don't attempt to fix behavioral differences between the parsers. "Native gems" contain pre-compiled libraries for a specific machine architecture. On supported platforms, this removes the need for compiling the C extension and the packaged libraries, or for system dependencies to exist. This results in much faster installation and more reliable installation, which as you probably know are the biggest headaches for Nokogiri users.
    Downloads: 7 This Week
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  • 8
    Lexbor

    Lexbor

    Lexbor is development of an open source HTML Renderer library

    Lexbor is the development of a web browser engine available as a software library; it ships with a free license and has no extra dependencies. For us, speed is an absolute must-have. In our development process, we focus on fastest parsing techniques for HTML, CSS, and fonts, fastest data processing methods, and fastest ways to serve content to end users. Whether you are building a backend that handles millions of HTML documents or a UI-heavy user app, your software’s response rate always matters to users and developers alike. Lexbor’s code is optimized for ease of access in end-user applications and across programming languages. You can effortlessly wrap all the capabilities of the library in, say, Python to power your end-user or backend applications in a new environment. In other words, lexbor offers a feature-rich core that developers can build upon as they see fit.
    Downloads: 6 This Week
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  • 9
    Tidy

    Tidy

    The granddaddy of HTML tools, with support for modern standards

    The granddaddy of HTML tools. Supports modern standards. Thanks to the efforts of HTACG and prominent contributors, HTML Tidy has a whole new heartbeat and a whole new life. Tidy tidies HTML and XML. It can tidy your documents by itself, and developers can easily integrate its features into even more powerful tools. Tidy is a console application for macOS, Linux, Windows, UNIX, and more. It corrects and cleans up HTML and XML documents by fixing markup errors and upgrading legacy code to modern standards. libtidy is a C static and dynamic library that developers can integrate into their applications in order to bring all of Tidy’s power to your favorite tools. libtidy is used today in desktop applications, web servers, and more. The HTML Tidy library, libtidy, is used and incorporated into many applications and projects. It offers an extensive API to read in and parse HTML from a file or buffer into a DOM-like node tree, has cleaning and diagnostic services, etc.
    Downloads: 6 This Week
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  • 10
    Systems Biology Markup Language (SBML)

    Systems Biology Markup Language (SBML)

    A file format for exchanging computational models in systems biology

    The Systems Biology Markup Language (SBML) is an XML-based description language for representing computational models in systems biology. Visit the project web site to learn more.
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    Downloads: 27 This Week
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  • 11
    MsQuic

    MsQuic

    Cross-platform, C implementation of the IETF QUIC protocol

    MsQuic is a Microsoft implementation of the IETF QUIC protocol. It is cross-platform, written in C and designed to be a general-purpose QUIC library. MsQuic also has C++ API wrapper classes and exposes interop layers for both Rust and C#. QUIC has many benefits when compared to existing "TLS over TCP" scenarios. MsQuic has several features that differentiate it from other QUIC implementations. Optimized for client and server. Optimized for maximal throughput and minimal latency. Asynchronous IO. Receive side scaling (RSS) support. UDP send and receive coalescing support. All packets are encrypted and handshake is authenticated with TLS 1.3. Parallel streams of (reliable and unreliable) application data. Exchange application data in the first round trip (0-RTT). Improved congestion control and loss recovery. Survives a change in the clients IP address or port. Stateless load balancing.
    Downloads: 5 This Week
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  • 12
    OpenDetex

    OpenDetex

    Tool for extracting plain text from TeX and LaTeX sources

    Improved version of Detex, tool for extracting plain text from TeX and LaTeX sources. OpenDetex is a program to remove TeX constructs from a text file. It recognizes the \input command. This program assumes it is dealing with LaTeX input if it sees the string "\begin{document}" in the text. It recognizes the \include and \includeonly commands.
    Downloads: 5 This Week
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  • 13
    UltraJSON

    UltraJSON

    Ultra fast JSON decoder and encoder written in C with Python bindings

    UltraJSON is an ultra-fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. May be used as a drop-in replacement for most other JSON parsers for Python. Used to enable special encoding of "unsafe" HTML characters into safer Unicode sequences. Limits output to ASCII and escapes all extended characters above 127. Default is True. If your end format supports UTF-8, setting this option to false is highly recommended to save space. By default, debugging symbols are stripped on Linux platforms. Setting this environment variable with a value of 1 or True disables this behavior. Users planning to link against an external shared library should be aware of the ABI-compatibility requirements this introduces when upgrading system libraries or copying compiled wheels to other machines.
    Downloads: 5 This Week
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  • 14
    librdkafka

    librdkafka

    The Apache Kafka C/C++ library

    librdkafka is a C library implementation of the Apache Kafka protocol, providing Producer, Consumer and Admin clients. It was designed with message delivery reliability and high performance in mind, current figures exceed 1 million msgs/second for the producer and 3 million msgs/second for the consumer. librdkafka is licensed under the 2-clause BSD license. KAFKA is a registered trademark of The Apache Software Foundation and has been licensed for use by librdkafka. librdkafka has no affiliation with and is not endorsed by The Apache Software Foundation. SASL (GSSAPI/Kerberos/SSPI, PLAIN, SCRAM, OAUTHBEARER) support. Guaranteed API stability for C & C++ APIs (ABI safety guaranteed for C). Runs on Linux, MacOS X, Windows, Solaris, FreeBSD, AIX, and more. Commercial support is available from Confluent Inc.
    Downloads: 5 This Week
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  • 15
    FontForge Windows builds

    FontForge Windows builds

    Unofficial Windows builds of FontForge

    The aim of this project is to compile up-to-date Windows builds of FontForge. For 'stable' builds, see https://github.com/fontforge/fontforge/releases The build system used was based off that offered by Matthew Petroff (http://www.mpetroff.net/software/fontforge-windows/), but has since been practically rewritten. New in 11/07/2020: * Synced with the 20201107 release. New in 06/04/2020: * Updated to latest master, picks up a clipboard copying fix New in 14/03/2020: * Synced with the 20200314 release. New in 01/03/2020: * Updated to latest master, now built with CMake. (prerelease) New in 02/06/2019: * The 32-bit build now uses Python 3 (3.7) instead of Python 2. No further Python 2 builds will be provided. * The GDK3 backend is now used. VcXsrv is no longer bundled. New in 31/07/2017: KNOWN ISSUES: * CTRL-C from console no longer interrupts/stops FontForge
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    Downloads: 40 This Week
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  • 16
    OpenCTM
    OpenCTM is a file format, a software library and a tool set for compression of 3D triangle meshes. The geometry is compressed to a fraction of comparable file formats (3DS, STL, COLLADA...), and the format is accessible through a simple, portable API
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    Downloads: 124 This Week
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  • 17
    Create beautiful song books for your church or fellowship using this LaTeX package and related tools.
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    Downloads: 40 This Week
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  • 18
    Tools for accessing and converting various ebook file formats
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    Downloads: 109 This Week
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  • 19
    GTK DBF Editor
    A simple editor for dbf files. The editor is built with GTK+, making it available on a number of platforms, including Linux and Windows.
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    Downloads: 38 This Week
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  • 20
    Decodes CGI data from standard input, $QUERY_STRING , and $HTTP_COOKIE. Stores data in lookup table(s) for easy retrieval. Uploads files by copying directly to files created with mkstemp(). Has several handy string conversion functions.
    Downloads: 27 This Week
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  • 21
    SwiftLaTeX

    SwiftLaTeX

    SwiftLaTeX, a WYSIWYG Browser-based LaTeX Editor

    SwiftLaTeX, LaTeX Engines in Browsers with optional WYSIWYG support. We are a big fan of WebAssembly and all computation is done locally.
    Downloads: 4 This Week
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  • 22
    shadowsocks-libev

    shadowsocks-libev

    Bug-fix-only libev port of shadowsocks

    Shadowsocks-libev is a lightweight secured SOCKS5 proxy for embedded devices and low-end boxes. Shadowsocks-libev is written in pure C and depends on libev. It's designed to be a lightweight implementation of shadowsocks protocol, in order to keep the resource usage as low as possible. Snap is the recommended way to install the latest binaries. You can build shadowsocks-libev and all its dependencies by script. The latest shadowsocks-libev has provided a redir mode. You can configure your Linux-based box or router to proxy all TCP traffic transparently, which is handy if you use an OpenWRT-powered router. Although shadowsocks-libev can handle thousands of concurrent connections nicely, we still recommend setting up your server's firewall rules to limit connections from each user. We strongly encourage you to install shadowsocks-libev from jessie-backports-sloppy.
    Downloads: 4 This Week
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  • 23

    gawk libraries for XML, PostgreSQL,...

    Dynamically loaded extension libraries for GNU AWK

    The gawkextlib project provides several extension libraries for gawk (GNU AWK), as well as libgawkextlib containing some APIs that are useful for building gawk extension libraries. These libraries enable gawk to process XML data, interact with a PostgreSQL database, use the GD graphics library, and perform unlimited precision MPFR calculations. These extensions work with GNU AWK version 4.1.1 or later. We have created a framework for packaging gawk extensions, and we welcome further contributions. Recent additions include haru, redis, and select for I/O multiplexing.
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    Downloads: 21 This Week
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  • 24
    Utilities to manage the ZIX archive format
    Downloads: 69 This Week
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  • 25
    An XML parser C library that's simple and easy to use. Inspired by simpleXML for PHP.
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    Downloads: 36 This Week
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