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

  • Try Google Cloud Risk-Free With $300 in Credit Icon
    Try Google Cloud Risk-Free With $300 in Credit

    No hidden charges. No surprise bills. Cancel anytime.

    Use your credit across every product. Compute, storage, AI, analytics. When it runs out, 20+ products stay free. You only pay when you choose to.
    Start Free
  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build generative AI apps with Vertex AI. Switch between models without switching platforms.
    Start Free
  • 1
    The OpenGL Extension Wrangler Library
    The OpenGL Extension Wrangler Library is a simple tool that helps C/C++ developers initialize extensions and write portable applications. GLEW currently supports a variety of operating systems, including Windows, Linux, Darwin, Irix, and Solaris.
    Leader badge
    Downloads: 2,924 This Week
    Last Update:
    See Project
  • 2
    stb

    stb

    stb single-file public domain libraries for C/C++

    stb is an open source collection of single-file C libraries created by Sean Barrett (nothings) for graphics, image loading, and utility functions. The repository provides lightweight, public domain libraries that can be easily integrated into projects without external dependencies or complex build processes. Popular components include stb_image.h for image loading, stb_image_write.h for writing images, and stb_truetype.h for font rendering. These libraries are widely used in game development, graphics engines, and multimedia applications due to their simplicity and portability. The project emphasizes ease of use, minimalism, and performance while avoiding bloated frameworks. Maintained and supported by the open source community, stb has become a standard toolkit for C and C++ developers working with images and graphics.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 3

    XLSX I/O

    C library for reading/writing values from/to Excel .xlsx files.

    Cross-platform C library for reading values from and writing values to .xlsx files. XLSX I/O aims to provide a C library for reading and writing .xlsx files. The .xlsx file format is the native format used by Microsoft(R) Excel(TM) since version 2007. The library was written with the following goals in mind: - primary focus on data values organized in tables, on not layout or graphics - written in standard C, but allows being used by C++ - simple interface - small footprint - portable across different platforms (Windows, *nix) - minimal dependancies: only depends on expat (only for reading) and libzip (which in turn depends on zlib) - separate library for reading and writing .xlsx files Also includes command line tools to convert between .xslx and CSV files.
    Downloads: 11 This Week
    Last Update:
    See Project
  • 4

    ULS

    A lexical analyzer generator that makes the class source code.

    ULS is a class library for creating lexical analyzer from language specification file. It's provided as C/C++/C# and Java (class) libraries with a few of tools on Linux/Windows platform.
    Downloads: 14 This Week
    Last Update:
    See Project
  • 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.
    Start Free
  • 5

    proxysocket

    Portable C library for proxy client support using standard SOCKETs.

    Cross-platform C library to establish TCP connections using a proxy. Supports different connection methods: - no proxy (optionally allowing to bind to a local address and/or port) - HTTP proxy: only CONNECT method, only without authentication or basic authentication - SOCKS4: without IDENT functionality - SOCKS5 (RFC 1928): only without authentication or username/password Features: - Currently only support IPv4 TCP connections. - Returns a standard operating system SOCKET that can be manipulated by standard operating system functions like send() and recv(). - Supports daisy-chaining multiple proxies. - Can also be used for direct connections (without proxy) optionally binding to a local address and/or port.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 6
    Project EVE AI
    EVEAI is a Deep Learning Library based on python Keras and Tensorflow. EVEAI dll allows embedding inference images from keras models into user-written applications. Under Windows, the EVEAI training Tool provides services to train user specific image datasets and EVEAI dll provides services to existing Windows applications which support inference images. Please visit https://github.com/Hommoner/EVEAI for more information.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 7
    OFPbin

    OFPbin

    OFP Binaries

    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    Paul Thomas's Performance Tuned SSH, aka PTssh. A cross-platform, high-performance, multi-threaded, thread-safe library implementing the SSH2 protocol and SFTP version 3.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    StringLib C: functional string library

    StringLib C: functional string library

    C library defining string type and designed for string manipulation

    The stringlib.h library by GreenApple allows easy string manipulation in C language by defining the type 'string' (or '_string') and providing several functions to easily operate with them. All allocation is done automatically, unallocation is done by calling the function 'string_delete(string*)'. Full documentation is present on the library header file.
    Downloads: 0 This Week
    Last Update:
    See Project
  • AI-generated apps that pass security review Icon
    AI-generated apps that pass security review

    Stop waiting on engineering. Build production-ready internal tools with AI—on your company data, in your cloud.

    Retool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
    Try Retool free
  • 10
    libtld

    libtld

    Extract the TLD of any, world wide, URI.

    The libtld is used to extract the TLD from any URI from anywhere in the world. The library recognizes all TLDs, whatever the number of levels the TLD includes (i.e. .com has one, .au has up to 4 such as .schools.nsw.edu.au) this library will be capable of extracting it. The library is for C, C++, and PHP.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • Next
MongoDB Logo MongoDB