Open Source C Software - Page 36
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C Software
Browse free open source C Software and projects below. Use the toggles on the left to filter open source C Software by OS, license, language, programming language, and project status.
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gpsim is an open sourced simulator for Microchip's PIC microcontrollers. It supports all three families of PICs: 12-bit, 14-bit, and 16-bit cores. See also gputils http://gputils.sourceforge.net/
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This emulator is capable of providing a faithful replication of the HP48. It also has a debugger for the saturn processor.
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XVIGAS análisis de vigas
Programa de ayuda en aprendizaje de cálculo de vigas
Xvigas realiza análisis de las vigas típicas de ejercicios y problemas. Es simple, primero defines el tipo de viga y sus características, luego introduces las cargas y finalmente obtienes los resultados: reacciones, fuerzas internas y deformacione -
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Lexical Analyzer Generator Quex
Generator of lexical analyzers in C and C++. Unicode Supported.
The goal of this project is to provide a generator for lexical analyzers of maximum computational efficiency and maximum range of applications. This includes the support for Unicode (UTF8, UTF16, ...) and a large variety of other encodings directly and via nested converters such as ICU(tm) and IConv. Sophisticated buffer handling allows to operate on plain file streams, on sockets, or manually fed buffer content. 'Ready-to-build' examples explain related concepts and facilitate practical applications. -
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The FreeDOS Project
FreeDOS is an open source DOS-compatible operating system
FreeDOS is an open source DOS-compatible operating system that you can use to play classic DOS games, run legacy business software, or write new DOS programs. Any program that works on MS-DOS should also run on FreeDOS. -
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SS5 is a socks server for Linux, Solaris and FreeBSD environment, that implements the SOCKS v4 and v5 protocol.
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HT is a file editor/viewer/analyzer for executables. The goal is to combine the low-level functionality of a debugger and the usability of IDEs. We plan to implement all (hex-)editing features and support of the most important file formats.
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SSVNC adds encryption security to VNC. It provides a GUI for Windows, MacOSX, and Unix that automatically starts up an SSL or SSH tunnel for connections to any VNC server. It also supports VeNCrypt encryption. The Unix viewer has many new features.
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Welcome to AutoTrace - a program for converting bitmap to vector graphics. The aim of the AutoTrace project is the development of a freely available application similar to CorelTrace or Adobe Streamline. I hope that it will be better than all commercial
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Siproxd is a proxy/masquerading daemon for the SIP protocol. It allows SIP clients (softphones & hardphones) to work behind an IP masquerading firewall or router.
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ArpON
ARP handler inspection
ArpON (ARP handler inspection) is a Host-based solution that make the ARP standardized protocol secure in order to avoid the Man In The Middle (MITM) attack through the ARP spoofing, ARP cache poisoning or ARP poison routing attack. -
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Vega Strike is a 3d OpenGL Action Space Sim for Win/Lin/Mac allowing players to trade, bounty hunt, or explore in a vast universe. Active development is now on https://github.com/vegastrike and on http://www.vega-strike.org Vega Strike is mod ready and network playable.
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The Sleuth Kit is a C++ library and collection of open source file system forensics tools that allow you to, among other things, view allocated and deleted data from NTFS, FAT, FFS, EXT2, Ext3, HFS+, and ISO9660 images.
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GTS provides a set of useful functions to deal with 3D surfaces meshed with interconnected triangles including collision detection, multiresolution models, constrained Delaunay triangulations and robust set operations (union, intersection, differences).
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IBM's TPM 2.0 TSS
IBM's TPM 2.0 TSS
This is a user space TSS for TPM 2.0. It implements the functionality equivalent to (but not API compatible with) the TCG TSS working group's ESAPI, SAPI, and TCTI API's (and perhaps more) but with a hopefully simpler interface. It comes with over 110 "TPM tools" samples that can be used for scripted apps, rapid prototyping, education, and debugging. It also comes with a web based TPM interface, suitable for a demo to an audience that is unfamiliar with TCG technology. It is also useful for basic TPM management. See the below link for operating system, platform, and hardware support. See the companion IBM TPM 2.0 at https://sourceforge.net/projects/ibmswtpm2/ and attestation at projects/ibmtpm2acs I welcome (1) bug reports, (2) documentation requests, (3) suggestions for ECC tests, and (4) requests for features for which you have an immediate need. See the wiki for additional support - additions to the documentation. -
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Chameleon-Mini
Versatile contactless smartcard emulator compliant to NFC
ChameleonMini is a portable, programmable NFC and RFID security research tool designed for analyzing, emulating, and cloning contactless smart cards. It operates as both hardware and firmware, allowing researchers to interact with NFC systems at a low level, including reading tags, emulating card behavior, and capturing radio frequency communication. The device is widely used in security testing, penetration testing, and academic research focused on wireless communication protocols and authentication systems. It supports multiple card types and codecs, enabling it to replicate real-world access cards, payment systems, and identification tokens. One of its most powerful capabilities is its ability to log and sniff RF traffic, which allows detailed inspection of communication between readers and cards. The project includes firmware, drivers, and software tools that enable configuration and interaction across different operating systems. -
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Expat
Fast streaming XML parser written in C99 with >90% test coverage
Welcome to Expat, a stream-oriented XML parser library written in C. Expat excels with files too large to fit RAM, and where performance and flexibility are crucial. There are a number of applications, libraries, and hardware using Expat, as well as bindings and 3rd-party wrappers. Expat is packaged everywhere. This is Expat, a C99 library for parsing XML 1.0 Fourth Edition, started by James Clark in 1997. Expat is a stream-oriented XML parser. This means that you register handlers with the parser before starting the parse. These handlers are called when the parser discovers the associated structures in the document being parsed. A start tag is an example of the kind of structure for which you may register handlers. -
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FLUX.2-klein-4B
Flux 2 image generation model pure C inference
FLUX.2-klein-4B is a compact, high-performance C library implementation of the Flux optimization algorithm — an iterative approach for solving large-scale optimization problems common in scientific computing, machine learning, and numerical simulation. Written with a strong emphasis on simplicity, correctness, and performance, it abstracts the core logic of flux-based optimization into a minimal C API that can be embedded in broader applications without pulling in heavy dependencies. Because the implementation is in plain C and focuses on data locality and vectorized operations, flux2.c can be integrated into performance-critical code paths where control over memory layout and execution behavior matters, such as GPU kernels, embedded systems, or custom ML runtime engines. -
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FSearch
A fast file search utility for Unix-like systems based on GTK3
FSearch is a blazing-fast file search utility for Linux inspired by Windows’ Everything Search Engine, built to allow users to locate files and directories instantly by name rather than content. It achieves its high performance by indexing the filesystem and updating that index in real time, so as you create, rename, or delete files the results stay up to date without noticeable lag. The intuitive user interface supports incremental search — where results filter as you type — plus features like regular expressions, case-sensitivity options, and customizable indexing scopes, making it both powerful and accessible. Designed with GTK and written in C, it integrates nicely with desktop environments like GNOME, XFCE, and Cinnamon while still being lightweight and resource-efficient. Developers and power users appreciate FSearch for dramatically reducing the time it takes to find files compared to traditional search tools, especially on large partitions. -
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Miningcore
Miningcore is a high-performance Mining Pool Software for Linux
Miningcore is a high-performance Mining Pool Software for Linux and Windows. -
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Mongoose Embedded Web Server
An embedded web server
Mongoose is a networking library for C/C++. It implements event-driven non-blocking APIs for TCP, UDP, HTTP, WebSocket, MQTT. It is designed for connecting devices and bringing them online. On the market since 2004, used by vast number of open source and commercial products - it even runs on the International Space Station! Mongoose makes embedded network programming fast, robust, and easy. Cross-platform, works on Linux/UNIX, MacOS, Windows, Android, FreeRTOS, etc. Supported embedded architectures: ESP32, NRF52, STM32, NXP, and more. Built-in protocols: plain TCP/UDP, HTTP, MQTT, Websocket. SSL/TLS support: mbedTLS, OpenSSL or custom (via API). Used to solve a wide range of business needs, like implementing Web UI interface on devices, RESTful API services, telemetry data exchange, remote control for a product, remote software updates, remote monitoring, and others. -
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NanoVNA
Very Tiny Palmtop Vector Network Analyzer
NanoVNA is a very tiny handheld Vector Network Analyzer (VNA). It is standalone with lcd display, portable device with battery. This project aims to provide an RF gadget but a useful instrument for an enthusiast.
